What does the Bible say about repentance?

I tell you, no, but unless you repent, you will all perish in the same way.

Luke 13:3

“Repent therefore, and turn again, that your sins may be blotted out, so that there may come times of refreshing from the presence of the Lord,

Acts 3:19

For godly sorrow works repentance to salvation, which brings no regret. But the sorrow of the world works death.

2 Corinthians 7:10

From that time, Jesus began to preach, and to say, “Repent! For the Kingdom of Heaven is at hand.”

Matthew 4:17

Repent therefore of this, your wickedness, and ask God if perhaps the thought of your heart may be forgiven you.

Acts 8:22

Remember therefore from where you have fallen, and repent and do the first works; or else I am coming to you swiftly, and will move your lamp stand out of its place, unless you repent.

Revelation 2:5

let the wicked forsake his way, and the unrighteous man his thoughts; and let him return to Yahweh, and he will have mercy on him; and to our God, for he will abundantly pardon.

Isaiah 55:7

Therefore produce fruit worthy of repentance!

Matthew 3:8

Or do you despise the riches of his goodness, forbearance, and patience, not knowing that the goodness of God leads you to repentance?

Romans 2:4