the Devil: the personal supernatural enemy of God who accuses and tempts human beings
By far the most common use of this word in the New Testament names a single being: the great cosmic adversary, usually called "the Devil" in English. The word is the standard Greek translation of the Hebrew title for the heavenly accuser (the satan), and it keeps that older flavor: at its root it means a person who throws hostile, distorting speech between God and people. So the Devil is pictured doing exactly that. He accuses, he tempts, he lies, and he opposes.
The senses below are not different beings but the different things this one figure is shown doing.
- He puts Jesus to the test in the wilderness
- he snatches away the word so it cannot take root
- he traps people in sin and holds them under the fear of death
- and he stands behind betrayal and murder from the very beginning
Revelation gathers all of this up and states plainly that the Devil, Satan (Σατανᾶς), the ancient serpent, and the dragon are one and the same enemy.
The word "Devil" is most often paired with the definite article ("the Devil"), which shows it working almost like a personal name, though the New Testament writers never quite finish turning it into one. It overlaps completely with the title Satan (Σατανᾶς): the two words point to the same figure, and writers tend to choose one or the other by audience and habit rather than by meaning.
Nuances
Disputed
Whether the cosmic figure named by this word is one coherent being inherited from Jewish tradition, or a synthesis the New Testament writers assembled from several distinct earlier figures (the Watchers, Mastema, Belial, and the accuser of Job and Zechariah).
- majorityBy the New Testament this word names one settled figure, identical to Satan, with Revelation 12:9 simply unmasking him across all his traditional titles.; Werner Foerster, "διάβολος," in Theological Dictionary of the New Testament, vol. 2 (1964), 71-81; G. K. Beale, The Book of Revelation (NIGTC; Eerdmans, 1999), 656-68
- minorityThe New Testament inherited several partly distinct evil figures, and its unified Devil is still a synthesis in progress; different writers may hold substantively different portraits.; Devorah Dimant, "Between Qumran Sectarian and Non-Sectarian Texts: The Case of Belial and Mastema," in History, Ideology and Bible Interpretation in the Dead Sea Scrolls (FAT 90; Mohr Siebeck, 2014), 235-56