The Greek verb agathopoieo (ἀγαθοποιέω) means to do good or to practice what is right. It appears approximately 9 times in the New Testament, primarily in 1 Peter and Mark. The word is closely related to agathoergeo (G7) but tends to be used in more broadly ethical contexts — doing right as opposed to doing evil.
It is a compound of agathos (good) and poieo (G4160, to do/make), emphasizing the active practice of goodness as a consistent pattern of life, not a one-time act.
Peter uses agathopoieo extensively in his first epistle, urging Christians to "do good" even in the face of suffering and misunderstanding. The context is striking: believers are called to goodness not when it is easy or appreciated, but precisely when it invites misunderstanding or persecution. "It is God's will that by doing good you should silence the ignorant talk of foolish people" (1 Peter 2:15).
Jesus Himself provides the model in Mark 3:4, where He frames His healing ministry in terms of agathopoieo: "Which is lawful on the Sabbath: to do good or to do evil?" The question reveals that doing good is the defining characteristic of the kingdom — and that rigid religious law which prevents genuine goodness has missed the heart of God entirely.