What the Bible says about Right Living is the Fruit of Repentance
(From Forerunner Commentary)
John the Baptist is the first of God's messengers to address repentance in the New Testament. John prepared the way for Christ's coming by preaching a message of repentance because, for people to develop righteousness, they must first repent. They could not accept Jesus' teachings until they had been convicted of their sins and turned from them. The proof, John says, that a person has truly made a change of heart and lifestyle appears when his life begins to show him doing what is right. Right living is the fruit of repentance.
If we think we have repented but are still walking the old road leading to death, then we probably have not fully repented. If that is the case, we need to do so right away! As Peter writes in I Peter 4:17, judgment is on us now, and whoever fails to live righteously—fails to show godly fruit—will be, in John the Baptist's words, "cut down and thrown into the fire." Stiff words, indeed, but necessary to motivate us toward the goal.
Richard T. Ritenbaugh
Repentance: The Genuine Article (Part Six)