atoning sacrifice of Christ
Otherwise, He would have needed to suffer often since the foundation of the world; but now once at the consummation of the ages He has been manifested to put away sin by the sacrifice of Himself.
12 but He, having offered one sacrifice for sins for all time, sat down at the right hand of God, 13 waiting from that time onward until His enemies be made a footstool for His feet. 14 For by one offering He has perfected for all time those who are sanctified.
John 1:29, 36
29 The next day he saw Jesus coming to him and said, Behold, the Lamb of God who takes away the sin of the world! . . . . 36 and he looked at Jesus as He walked, and said, Behold, the Lamb of God!»
1 Peter 1:19
but with precious blood, as of a lamb unblemished and spotless, the blood of Christ.