inside: in or into an enclosed space, and so also the person on the inside and the people who belong within a group
TranslatabilityApproximateCertaintySettled
This is an ordinary, physical word. It is where Peter went when he trailed Jesus into the high priest's courtyard (Matthew 26:58;Mark 14:54), where soldiers marched Jesus once they had him off the street (Mark 15:16), where the disciples were sitting with the doors shut a week after the resurrection (John 20:26), and where the temple officers found nobody at all after the apostles' night in custody (Acts 5:23). Nothing about the word itself is religious.
What holds its uses together is that it always assumes a boundary, and the sentence decides what the boundary is:
a wall or a locked door, so that "inside" means a courtyard or a cell
the outward life other people can see, so that "inside" means the self God is at work on
the edge of a congregation, so that "inside" means the people who belong to it
In six of its nine appearances the word is doing its work against its opposite, "outside" (ἔξω), which stands in the same sentence three times: guards outside and no prisoners inside (Acts 5:23), outsiders whom Paul will not judge and insiders whom the church must (1 Corinthians 5:12), the life that is wearing out and the self that is being renewed (2 Corinthians 4:16). Greek had close neighbors for this word, including one built from it that adds the idea of coming out from inside (ἔσωθεν) and one that marks being within something's bounds (ἐντός), and by the first century the three overlapped a good deal.
Nuances
1ainside a building or walled space, whether standing there already or on the way in
TranslatabilityDirect
Mat 26:58Mrk 14:54Mrk 15:16Jhn 20:26Act 5:23
1bthe inner person: the self underneath the life other people can see
Rom 7:222Co 4:16Eph 3:16
1cinside the group: the people who belong to a community, as against those outside it
is the same everyday word used of a courtyard and a governor's residence, so the phrase "the inner person" is built from plain vocabulary rather than from technical religious languageMat 26:58Mrk 15:16
Both
both turn attention away from what is visible toward what lies behind itRom 7:222Co 4:16
Only inner
the English word suggests a separate hidden compartment of a person, a soul housed inside a body, which the Greek word by itself never claims
“within”
Comparison data is not available for this English gloss yet.
“in”
Comparison data is not available for this English gloss yet.
How esō differs from similar Greek words
ἔσωθενbuilt from this word, and it can add the sense of coming out from inside, as evil does from the heart in Mark 7:21
Names the inside of a real enclosed place, and often marks the movement of going into it: a courtyard, a governor's residence, a locked cell, a room with the doors shut.Mat 26:58Mrk 14:54Mrk 15:16Jhn 20:26Act 5:23
Supplies the settled phrase "the inner person", a positive name for the true self that God strengthens and renews even while the body wears out.Rom 7:222Co 4:16Eph 3:16
Marks belonging rather than physical space: the people "inside" the believing community, as against those outside it.1Co 5:12
Both
Both turn attention away from the surface to what lies within, whether that is the inside of a building or the inside of a person, and both are commonly rendered "inside" or "within".Act 5:23Mat 23:25
Both can be used as a noun rather than as a description of place, naming "the inside" itself or the people who are on the inside.1Co 5:12Luk 11:40
Points outward from the inside, naming where something comes from: evil that pours out of the human heart, or a voice answering from indoors.Mrk 7:21Mrk 7:23Luk 11:7
Sets the inner face of a single object against its outer face: the cup washed on the outside, the tomb painted white, the scroll covered with writing, the creatures studded with eyes.Mat 23:25Mat 23:27Luk 11:39Rev 4:8Rev 5:1
Exposes what a person is really like underneath the appearance they present, so it usually carries a note of accusation or of hidden pain.Mat 7:15Mat 23:282Co 7:5
ἔξωits opposite number, "outside", and the word it is most often set against in the same sentence
It marks the guarded interior you have to get past a gate or a door to reach: the high priest's courtyard Peter slipped into, the palace yard the soldiers marched Jesus into, the room where the disciples sat with the doors locked.Mat 26:58Mrk 14:54Mrk 15:16Jhn 20:26
Standing alone, with no outward counterpart anywhere in the sentence, it names the hidden self where God does his work: the self that delights in God's law, and the self the Spirit strengthens.Rom 7:22Eph 3:16
Both
Both fix a position by the same single boundary, one on each side of it, and the New Testament sets them in one sentence to make the contrast land: guards posted at the doors, and not a prisoner left in the cell.Act 5:23
Both can drop the place altogether and name people or a way of being: the outsiders Paul will not judge set against the members the church must, and the life that is wearing out set against the self being renewed.1Co 5:122Co 4:16
It is the word for putting someone out. Again and again it goes with verbs of seizing and throwing, marking the moment a person is removed from where they were: dragged out of the vineyard and killed, hustled out of the town to a cliff edge, thrown out of the synagogue, hauled outside the city and stoned.Mat 21:39Luk 4:29Jhn 9:34Act 7:58
It can carry a promise or a warning about final belonging: no one who comes to Jesus will be driven away, the ruler of this world is thrown out, useless branches are tossed away, and those shut out stand knocking at a closed door.Jhn 6:37Jhn 12:31Jhn 15:6Luk 13:25
It marks the ground beyond an approved edge, and the New Testament turns that into a theme: the sacrifice burned outside the camp, Jesus killed outside the gate, and the call to go out to him there.Heb 13:11Heb 13:12Heb 13:13
On its own it can name people who do not belong to the church, without any matching word for insiders in the sentence: those given only parables, the neighbors a believer should live wisely toward, the ones watching a quiet working life.Mrk 4:11Col 4:51Th 4:12
ἐντός"within" in the sense of inside something's bounds, and in Luke 17:21 possibly "among" a group of people
The everyday word for going in, used of real movement from outside a building to inside it. Peter follows into the courtyard of the high priest, and the soldiers march Jesus into the palace.Mat 26:58Mrk 14:54Mrk 15:16
Marks who or what is present within a shut room or building. The disciples are gathered behind closed doors, and the officers open the prison to find no one there.Jhn 20:26Act 5:23
Forms the settled expression "the inner person", the hidden self that God strengthens and renews while the body wears out.Rom 7:222Co 4:16Eph 3:16
Marks belonging to a community, sorting the people inside the church from the outsiders Paul refuses to judge.1Co 5:12
Both
Both name the inside of something in direct contrast with its outside, and both sit in the same sentence as the matching word for "outside".Mat 23:261Co 5:12
Both can place something inside people rather than inside a building, whether that is the reign of God or the hidden self.Luk 17:21Rom 7:22
Points at what a container actually holds, its contents, rather than a space a person can walk into. Jesus tells the Pharisees to clean the inside of the cup, meaning the greed that fills it.Mat 23:26
Locates something in relation to a group of people or to a person, which is why the saying about the kingdom of God is rendered both "within you" and "among you".Luk 17:21
esō in the other biblical languages
פְּנִימָהHebrew“within”the Hebrew word for "inward, on the inside", used of the inner room of a house or of the temple
It names a part of a person, the hidden self the New Testament calls the "inner" person: the self that delights in God's law, that God strengthens with power, and that is renewed day by day even as the visible body wears out. The Hebrew word never turns inward like this.Rom 7:222Co 4:16Eph 3:16
It can mark who belongs to a community rather than where anyone is standing. Paul judges "those inside" the church and leaves outsiders to God, so the line drawn is social, not architectural.1Co 5:12
Both
Both are the plain word for crossing a threshold: someone passes the entrance and is now inside a building while others stay out. A report is carried inside the king's house and priests come inside to the king; Peter goes inside the high priest's courtyard and soldiers take Jesus inside the governor's headquarters. Where a Greek writer needs the sense the Hebrew word carries, this is the word he reaches for.2Ki 7:112Ch 29:18Mat 26:58Mrk 14:54Mrk 15:16
Both are regularly set directly against "outside" in the same breath, so the point is the contrast between two zones rather than a location on its own: gold laid on the floor of the house inside and outside, and guards standing at the doors outside while inside no one was found.1Ki 6:30Act 5:23
It is at home in the description of a building's interior: the cedar carving that lines the house inside, the gold laid over its inner surfaces, the windows in the gateway that look inward. This is the language of a builder or a surveyor working through a structure.1Ki 6:181Ki 6:212Ch 3:4Ezk 40:16
It marks the restricted heart of a holy building, the space priests enter and ordinary people do not: the inner room prepared for the ark, the holy place where the offering's blood was to be brought, the interior the priests walked into in order to cleanse it.Lev 10:181Ki 6:192Ch 29:16Ezk 41:3
Where it does describe a person, it still points at a place: the king's daughter is all glorious "within", indoors in her gold woven clothing rather than on show in the street.Psa 45:13
קֶרֶבHebrew“entrails: among”the Hebrew word for what is inside a body, and so for a person's inner life, where the Greek word only marks position
The Greek word is a word of going in: crossing a door or a gate so that you are now on the inside. Peter follows Jesus inside the high priest's courtyard (Matthew 26:58,Mark 14:54), and the soldiers march Jesus inside the governor's palace (Mark 15:16). The Hebrew word never describes movement into a place; it only names the inside of something that is already there.Mat 26:58Mrk 14:54Mrk 15:16
It can label people as the ones on the inside, the members of a community set over against outsiders. Paul asks whether it is not "those inside" the church that the congregation is responsible to judge (1 Corinthians 5:12). The Hebrew word can say that someone is among a people, but it never turns that into a name for the insiders as a group.1Co 5:12
Both
Both name the hidden inner self, the part of a person that thinks and feels where no one else can see. Sarah laughs to herself when she overhears the promise (Genesis 18:12), and the psalm asks for a steady spirit to be made new inside the speaker (Psalm 51:10). Paul calls the same thing the inner person, which delights in God's law (Romans 7:22) and is renewed day by day even as the body wears out (2 Corinthians 4:16,Ephesians 3:16).Gen 18:12Psa 51:10Rom 7:222Co 4:16Eph 3:16
Both can simply place something inside a bounded space, with the outside implied. Abraham bargains for the righteous who are inside the city (Genesis 18:24), and the officers report finding no one inside the locked prison (Acts 5:23).Gen 18:24Act 5:23
The Hebrew word is a body word before it is a place word. It names the organs of a slaughtered animal, washed and burned on the altar (Exodus 29:13,Exodus 29:17,Leviticus 1:9,Leviticus 3:3), and it covers the inside of a living body, where twins wrestle before birth (Genesis 25:22) and where a boy's life comes back into him (1 Kings 17:21). The Greek word never names a body part.Exo 29:13Exo 29:17Lev 1:9Lev 3:3Gen 25:221Ki 17:21
It carries the sense of being in the middle of a people, presence among a crowd rather than inside a building. God refuses to travel in Israel's midst after the golden calf (Exodus 33:3), Moses begs him to go among them anyway (Exodus 34:9), and the promise that he is present in the middle of his people runs through the prophets and psalms (Joshua 3:10,Psalm 46:5,Zephaniah 3:17).Exo 33:3Exo 34:9Jos 3:10Psa 46:5Zep 3:17
What scholars say about esō
The lexica treat the adverb under two headings: a local use, both with verbs of motion (Matthew 26:58;Mark 14:54) and without them (John 20:26;Acts 5:23), including the improper prepositional construction with the genitive at Mark 15:16; and an attributive or substantival use, ὁ ἔσω ἄνθρωπος at Romans 7:22,2 Corinthians 4:16 and Ephesians 3:16, and οἱ ἔσω at 1 Corinthians 5:12 in antithesis to οἱ ἔξω (BDAG; LSJ). The Koine weakening of the distinction between "where" and "whence" adverbs brings ἔσω, ἔσωθεν and ἐντός into considerable overlap (Blass, Debrunner and Funk §104). The Pauline phrase ὁ ἔσω ἄνθρωπος has generated a substantial literature: Betz derives it from Hellenistic, ultimately Platonic, anthropology (Plato, Republic 589a-b, ὁ ἐντὸς ἄνθρωπος), while Heckel treats it as a Platonic motif thoroughly reworked in Paul's eschatological framework, and commentators dispute whether the phrase carries the same referent in Romans 7:22, where it belongs to the contested "I" of that chapter, as in 2 Corinthians 4:16 and Ephesians 3:16, where it names the believer under renewal. In the Septuagint the corresponding Hebrew expressions are chiefly פְּנִימָה and forms built on בַּיִת.
Sources
BDAG, s.v. ἔσωlexicon
LSJ, s.v. ἔσωlexicon
F. Blass, A. Debrunner and R. W. Funk, A Greek Grammar of the New Testament and Other Early Christian Literature, §104grammar
H. D. Betz, The Concept of the Inner Human Being in the Anthropology of Paul, New Testament Studies 46 (2000), 315-341article
T. K. Heckel, Der innere Mensch: Die paulinische Verarbeitung eines platonischen Motivs, WUNT 2/53monograph
C. E. B. Cranfield, A Critical and Exegetical Commentary on the Epistle to the Romans, ICC, on Romans 7:22commentary