Produce fruit in keeping with repentance.
The job of John the Baptist was to prepare the way for Jesus’ ministry. He called people to repent of their sins and get their lives back on track. He didn’t want people to just be sorry about their sin, he wanted them to stop it.
To repent means to turn 180 degrees in the opposite direction from the way you were headed. Repentance does not just mean saying that you’re sorry. Anyone can say they are sorry; many can be genuinely sorry.
It is only the truly repentant that can be sorry and seek to stop doing the same things that they are sorry about. Good fruit is a product of repentance.
Wickedness also bears fruit but it is a harvest that no one wants to reap. Repentance means bearing fruit that is in line with the will of God.
Good fruit is an indication of truly changed life. Wicked people will continue to bear wicked fruit, regardless of what they profess. Repentant people won’t be able to help but bear good fruit because they have turned from their sinful ways.