Hebrews 10:17, “And their sins and iniquities will I remember no more.”
If God Himself chooses not to remember our sins, then who are we to remember something that God Himself has chosen to forget?
Philippians 3:13, “Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before,”
