6 Bible Verses about Atonement, Made Once

He doesn’t need to offer sacrifices every day, as high priests do—first for their own sins, then for those of the people. He did this once for all when He offered Himself.

For the Messiah did not enter a sanctuary made with hands (only a model of the true one) but into heaven itself, so that He might now appear in the presence of God for us. He did not do this to offer Himself many times, as the high priest enters the sanctuary yearly with the blood of another. Otherwise, He would have had to suffer many times since the foundation of the world. But now He has appeared one time, at the end of the ages, for the removal of sin by the sacrifice of Himself. read more.
And just as it is appointed for people to die once—and after this, judgment— so also the Messiah, having been offered once to bear the sins of many, will appear a second time, not to bear sin, but to bring salvation to those who are waiting for Him.

By this will of God, we have been sanctified through the offering of the body of Jesus Christ once and for all.

But this man, after offering one sacrifice for sins forever, sat down at the right hand of God.

For by one offering He has perfected forever those who are sanctified.

For Christ also suffered for sins once for all,
the righteous for the unrighteous,
that He might bring you to God,
after being put to death in the fleshly realm
but made alive in the spiritual realm.