6 Bible Verses about Atonement, Made Once

one who has no need to offer sacrifices daily as those High Priests have, first for their own sins, and then for those of the People. For this he did once and for all, when he offered himself as the sacrifice.

For it was not into a Sanctuary made by human hands, which merely foreshadowed the true one, that Christ entered, but into Heaven itself, that he might now appear in the presence of God on our behalf. Nor yet was it to offer himself may times, as year after year the High Priest entered the Sanctuary with an offering of blood--but not his own blood; for then Christ would have had to undergo death many times since the creation of the world. But now, once and for all, at the close of the age, he has appeared, in order to abolish sin by the sacrifice of himself.read more.
And, as it is ordained for men to die but once (death being followed by judgment), so it is with the Christ. He was offered up once and for all, to 'bear away the sins of many'; and the second time he will appear--but without any burden of sin--to those who are waiting for him, to bring Salvation.

And it is in the fulfillment of the will of God that we have been purified by the sacrifice, once and for all, of the body of Jesus Christ.

But, this priest, after he had offered one sacrifice for sins, which should serve for all time, 'took his seat at the right hand of God,'

By a single offering he has made perfect for all time those who are being purified.

For Christ himself died to atone for sins once for all--the good on behalf of the bad--that he might bring you to God; his body being put to death, but his spirit entering upon new Life.