'Propitiation' in the Bible

Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God;

Therefore, He had to be like His brothers in every way, so that He could become a merciful and faithful high priest in service to God, to make propitiation for the sins of the people.

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

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