Hebrews 10:5-7, 10, 15-17

Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, But a body didst thou prepare for me; In whole burnt offerings and sacrifices for sin thou hadst no pleasure: Then said I, Lo, I am come (In the roll of the book it is written of me) To do thy will, O God.

By which will we have been sanctified through the offering of the body of Jesus Christ once for all.

And the Holy Spirit also beareth witness to us; for after he hath said, This is the covenant that I will make with them After those days, saith the Lord: I will put my laws on their heart, And upon their mind also will I write them; then saith he, And their sins and their iniquities will I remember no more.