Repentance

If my people, which are called by my name, shall humble themselves, and pray, and seek my face, and turn from their wicked ways; then will I hear from heaven, and will forgive their sin, and will heal their land.  
2 Chronicles 7:14

If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.   1 John 1:9

I tell you, Nay: but, except ye repent, ye shall all likewise perish.  Luke 13:3

The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.  2 Peter 3:9

Remember therefore from whence thou art fallen, and repent, and do the first works; or else I will come unto thee quickly, and will remove thy candlestick out of his place, except thou repent.  Revelation 2:5

Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Spirit.  Acts 2:38