Romans 5:10-11

For if, when we were God's enemies, we were reconciled to him through the death of his Son, how much more, now that we are reconciled, shall we be saved in his life.

Hebrews 9:12

not taking the blood of goats and oxen, but his own blood, and entered once for all into the Holy Place, obtaining for us an eternal redemption.

Hebrews 9:26

(for in that case he would have needed to suffer repeatedly, ever since the foundation of the world;)but now, once for all, at the end of the ages, he has appeared to abolish sin, but the offering of himself.

Hebrews 10:10

And it is by this will that we have been sanctified by the offering of the body of Jesus Christ once for all.

Hebrews 10:14

For by one single offering he has perfected forever those whom he is sanctifying.

1 John 2:2

And he is the propitiation for our sins, and not for ours only, but also for those of the whole world.

1 John 4:10

In this is love, not that we loved God, but that he loved us, and sent his Son to be a propitiation for our sins.

1 John 5:6

Jesus Christ is he who came by water and blood, not by the water only, but by the water and by the blood. The spirit is he who bears testimony, because the Spirit is the truth.

Treasury of Scripture Knowledge

Summary

And ye shall do no work in that same day: for it is a day of atonement, to make an atonement for you before the LORD your God.

Bible References

General references

Romans 5:10
For if, when we were God's enemies, we were reconciled to him through the death of his Son, how much more, now that we are reconciled, shall we be saved in his life.
Hebrews 9:12
not taking the blood of goats and oxen, but his own blood, and entered once for all into the Holy Place, obtaining for us an eternal redemption.
Hebrews 10:10
And it is by this will that we have been sanctified by the offering of the body of Jesus Christ once for all.
1 John 2:2
And he is the propitiation for our sins, and not for ours only, but also for those of the whole world.
1 John 4:10
In this is love, not that we loved God, but that he loved us, and sent his Son to be a propitiation for our sins.
1 John 5:6
Jesus Christ is he who came by water and blood, not by the water only, but by the water and by the blood. The spirit is he who bears testimony, because the Spirit is the truth.