tharseō

The word is a command more than a description: "take heart!" or "take courage!" In the New Testament it appears only as an order, and almost always on the lips of Jesus, spoken to people who are afraid, ashamed, sick, or in danger. It is not a mild "cheer up." It calls for real courage in a hard moment, and it treats that courage as something given, not something the frightened person has to manufacture alone.

The word carried deep echoes for its first hearers. The Greek Old Testament used it again and again to translate God's great reassurance to his people, "do not be afraid," spoken at moments of rescue: to Israel at the Red Sea, to the widow Elijah fed, to the people returning from exile. So when Jesus says "take courage, it is I, do not be afraid" while walking on the water, he is stepping into the very words God uses to reveal himself and to save. Many hearers in the first century would have caught that resonance at once.

Its high point is John 16:33, where the courage is anchored not in the hearer but in what Jesus has already done: "in the world you will have trouble, but take courage, I have conquered the world." The command rests on a victory spoken of as already finished, even before the cross. This also turns a common saying on its head. Greek gravestones of the era often read "take courage, no one is immortal," offering comfort by pointing to the fact that everyone dies. Jesus grounds the same command in the opposite fact: not that all must die, but that he has overcome death.

Paul and the letter to the Hebrews use a close relative of this verb, θαρρέω, for a settled, inner confidence rather than a spoken command. A different word, τολμάω, points to bold action taken on the outside, while this word is the courage of heart that stands firm within. Its nearest counterpart in the Hebrew Scriptures is the call to "be strong and courageous" (חזק), the courage summoned for a daunting task.