Hebrews 7:27-28
who, unlike other High Priests, is not under the necessity of offering up sacrifices day after day, first for His own sins, and afterwards for those of the people; for this latter thing He did once for all when He offered up Himself.
Romans 8:3
For what was impossible to the Law--powerless as it was because it acted through frail humanity--God effected. Sending His own Son in a body like that of sinful human nature and as a sacrifice for sin, He pronounced sentence upon sin in human nature;
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.
Hebrews 5:3
And for this reason he is required to offer sin-offerings not only for the people but also for himself.