Repentance

REPENTANCE (Grk. metanoia, a "change" of mind). In the theological and ethical sense a fundamental and thorough change in the hearts of men from sin and toward God.

Matt
4:17 From that time Jesus began to preach and to say, "Repent, for the kingdom of heaven is at hand."
NKJV

Luke 13:5
I tell you, no; but unless you repent you will all likewise perish."
NKJV

Rom 2:4
Or do you show contempt for the riches of his kindness, tolerance and patience, not realizing that God's kindness leads you toward repentance?
(NIV)