εὐφραίνω

G2165, euphraínō, is a Greek verb for gladdening someone, rejoicing, celebrating, or making merry. Its New Testament uses refuse to treat celebration as automatically good. The father in Jesus' parable celebrates because his lost son has returned alive, and he tells the older brother that such joy is fitting. Gentiles are summoned to rejoice with God's people because of mercy. Paul describes believers as able to cheer one another within a painful relationship. These passages show celebration as shared response to restoration, mercy, communion, and another person's good.

Other contexts expose corrupted celebration. The rich fool plans to make merry over stored abundance while living toward himself rather than being rich toward God. The rich man celebrates daily while Lazarus lies suffering at his gate. Israel rejoices in the idol made by human hands. Revelation portrays the earth's inhabitants exchanging gifts over the deaths of God's witnesses. In each case, gladness reveals a false center: hoarded security, indifference to a suffering neighbor, idolatry, or delight in silenced truth. The verb names the celebration but does not approve it. Joy must be tested by whom it includes, whose pain it ignores, what it worships, and what story it tells.

Revelation also commands heaven to rejoice over the accuser's defeat and Babylon's judgment while warning that the earth still faces the dragon's fury. Such texts must be handled with moral and pastoral restraint. They celebrate God's truthful judgment and the end of persecuting, exploitative power, not cruelty toward present people or permission for revenge. Christian celebration can name relief, vindication, repentance, return, and shared mercy without making suffering into spectacle. It should welcome the restored without humiliating them, invite the resentful without centering entitlement, share resources with people at the gate, and remain sensitive to those whose grief makes participation difficult.

G2165 ranges from mutual gladdening and fitting celebration of restoration to self-indulgence, idolatrous festivity, gloating over witnesses, shared Gentile joy, and heaven's response to God's judgment.