You cannot undo your acts. If you have depraved another's will, and injured another's soul, it may be in the grace of God that hereafter you will be personally accepted, and the consequence of your guilt inwardly done away; but your penitence cannot undo the evil you have done. The forgiveness of God — the blood of Christ itself — does not undo the past.

P. 217. - Dictionary of Burning Words of Brilliant Writers (1895)