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.
Hebrews 5:3
and so is obliged to offer sin-offerings, not only for the people but for himself as well.
Hebrews 7:27
who does not need, as did the Levitical priests, to offer sacrifices, first for his own sins and then for those of the people; this latter is just what He did once for all when He offered up Himself.
Hebrews 10:10-14
It is by this will of God that we are consecrated through the offering of Jesus' body once for all.