He Himself is the atoning sacrifice for our sins, and not only for ours but also for the sins of the whole world.

Leviticus 16:10
But the goat chosen by lot as the scapegoat shall be presented alive before the LORD to make atonement by sending it into the wilderness as the scapegoat.

John 4:42
They said to the woman, "We now believe not only because of your words; we have heard for ourselves, and we know that this man truly is the Savior of the world."

John 11:51
Caiaphas did not say this on his own. Instead, as high priest that year, he was prophesying that Jesus would die for the nation,

Romans 3:25
God presented Him as the atoning sacrifice through faith in His blood, in order to demonstrate His righteousness, because in His forbearance He had passed over the sins committed beforehand.

Hebrews 2:17
For this reason He had to be made like His brothers in every way, so that He might become a merciful and faithful high priest in service to God, in order to make atonement for the sins of the people.

1 John 3:5
But you know that Christ appeared to take away sins, and in Him there is no sin.

1 John 4:10
And love consists in this: not that we loved God, but that He loved us and sent His Son as the atoning sacrifice for our sins.

1 John 4:14
And we have seen and testify that the Father has sent His Son to be the Savior of the world.

And he is the propitiation for our sins: and not for our's only, but also for the sins of the whole world.