Acts 3:19 (NIV)

¹⁹ Repent, then, and turn to God, so that your sins may be wiped out, that times of refreshing may come from the Lord,

1 John 1:9 (NIV)

⁹ If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness.

Proverbs 28:13 (NLT)

¹³ People who conceal their sins will not prosper,
    but if they confess and turn from them, they will receive mercy.

Luke 13:1-9 (NIV)

Repent or Perish

13 Now there were some present at that time who told Jesus about the Galileans whose blood Pilate had mixed with their sacrifices. ² Jesus answered, “Do you think that these Galileans were worse sinners than all the other Galileans because they suffered this way? ³ I tell you, no! But unless you repent, you too will all perish. ⁴ Or those eighteen who died when the tower in Siloam fell on them—do you think they were more guilty than all the others living in Jerusalem? ⁵ I tell you, no! But unless you repent, you too will all perish.”

⁶ Then he told this parable: “A man had a fig tree growing in his vineyard, and he went to look for fruit on it but did not find any. ⁷ So he said to the man who took care of the vineyard, ‘For three years now I’ve been coming to look for fruit on this fig tree and haven’t found any. Cut it down! Why should it use up the soil?’

⁸ “‘Sir,’ the man replied, ‘leave it alone for one more year, and I’ll dig around it and fertilize it. ⁹ If it bears fruit next year, fine! If not, then cut it down.’”

Luke 3:9 (NIV)

⁹ The ax is already at the root of the trees, and every tree that does not produce good fruit will be cut down and thrown into the fire.”

Luke 13:3 (NIV)

Jesus - "But unless you repent, you too will all perish."