Acts 3:19 NIV

Acts 2:38 niv
Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit.

Isaiah 1:16-20 niv
Wash and make yourselves clean. Take your evil deeds out of my sight; stop doing wrong. Learn to do right; seek justice. Defend the oppressed. Take up the cause of the fatherless; plead the case of the widow. “Come now, let us settle the matter,” says the Lord. “Though your sins are like scarlet, they shall be as white as snow; though they are red as crimson, they shall be like wool. If you are willing and obedient, you will eat the good things of the land; but if you resist and rebel, you will be devoured by the sword.” For the mouth of the Lord has spoken.

Isaiah 43:25 niv
“I, even I, am he who blots out your transgressions, for my own sake, and remembers your sins no more.

Isaiah 44:22 niv
I have swept away your offenses like a cloud, your sins like the morning mist. Return to me, for I have redeemed you.”

Matthew 13:15 niv
For this people’s heart has become calloused; they hardly hear with their ears, and they have closed their eyes. Otherwise they might see with their eyes, hear with their ears, understand with their hearts and turn, and I would heal them.’

Matthew 18:3 niv
And he said: “Truly I tell you, unless you change and become like little children, you will never enter the kingdom of heaven.