2 Corinthians 5:21
God considered Christ to be sinful on our behalf, even though He never sinned, so that we could be considered right with God through Him.
Hebrews 5:3
And because of this he is obligated to offer [sacrifices] for his own sins also, as well as the people's sins.
Hebrews 7:27
He does not need to offer up [animal] sacrifices every day like those head priests did [Note: The head priest here is represented as being in charge of the daily sacrifices offered by the other priests], first for His own sins and then for the people's sins. For He did this once for all time when He offered up Himself [on the cross].
Hebrews 10:10-14
By [Christ doing] what God wanted, we have been set aside for God through Jesus Christ offering His body once for all time.