Hebrews 2:17
And for this purpose it was necessary that in all respects He should be made to resemble His brothers, so that He might become a compassionate and faithful High Priest in things relating to God, in order to atone for the sins of the people.
Hebrews 5:3
And for this reason he is required to offer sin-offerings not only for the people but also for himself.
2 Corinthians 5:21
He has made Him who knew nothing of sin to be sin for us, in order that in Him we may become the righteousness of God.
Titus 2:14
who gave Himself for us to purchase our freedom from all iniquity, and purify for Himself a people who should be specially His own, zealous for doing good works.