“Repent!” is the first sermon ever preached in the New Testament, for John the Baptist and Jesus himself came preaching, “Repent, for the kingdom of heaven is at hand!” (e.g., Mark 1:4, 15; Matt 3:2, 8; 4:17; Luke 3:3; 5:32). But there is sometimes confusion about this idea of repentance, especially regarding its place in the gospel and in the Christian's daily walk. Therefore, I hope to look at the meaning of this word, “repent,” how the word is used in the New Testament, and what it means for us today as we witness and walk with Christ.