Since you cannot keep God’s commandments perfectly, what has Jesus done on your behalf? (Q337)
From To Be A Christian, An Anglican Catechism
As the perfect human and the unblemished Lamb, Jesus has offered himself to God, suffering death for my redemption upon the cross, which is the once for all “sacrifice, oblation, and satisfaction for the sins of the whole world.” (1662 Book of Common Prayer; Hebrews 10:10,12)