"If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness." 1 John 1:9
"If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and will heal their land." 2 Chronicles 7:14
"Repent, then, and turn to God, so that your sins may be wiped out, that times of refreshing may come from the Lord." Acts 3:19
"The Lord is not slow in keeping his promise, as some understand slowness. Instead he is patient with you, not wanting anyone to perish, but everyone to come to repentance." 2 Peter 3:9
"From that time on Jesus began to preach, “Repent, for the kingdom of heaven has come near.” Matthew 4:17
"I tell you that in the same way there will be more rejoicing in heaven over one sinner who repents than over ninety-nine righteous persons who do not need to repent." Luke 15:7
"For I take no pleasure in the death of anyone, declares the Sovereign Lord. Repent and live!" Ezekiel 18:32
“The time has come,” he said. “The kingdom of God has come near. Repent and believe the good news!” Mark 1:15
"I have not come to call the righteous, but sinners to repentance."
"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.” Acts 2:38
Indeed the Bible talks a lot about repentance. Repentance must be heart-felt, sincere, and solemn. It must involve turning away from sin and sincere regret over the committing of it. It must involve heart-felt change. Unlike Old Testament times, we are not called to wear sack-cloth and ashes, but to turn from our sins and commit them no more. I leave you with this thought...when was the last time you confessed a sin and repented for it. If it has been too long, perhaps it is time to do it now?