Hebrews 10:10; Hebrews 10:12-14

10 And by that will, we have been made holy through the sacrifice of the body of Jesus Christ once for all.
12 But when this priest had offered for all time one sacrifice for sins, he sat down at the right hand of God, 13 and since that time he waits for his enemies to be made his footstool. 14 For by one sacrifice he has made perfect forever those who are being made holy.