Hebrews 2:17
Therefore He had to be made like His brothers, so that He could be a sympathetic High Priest, as well as a faithful one, in things relating to God, in order to atone for the people's sins.
Hebrews 5:3
and so is obliged to offer sin-offerings, not only for the people but for himself as well.
2 Corinthians 5:21
He made Him who personally knew nothing of sin to be a sin-offering for us, so that through union with Him we might come into right standing with God.
Titus 2:14
who gave Himself for us to ransom us from all iniquity and purify for Himself a people to be His very own, zealous of good works.