1 Peter 1:19

but with the precious blood of Christ, as of a lamb without blemish, and without spot;

1 Peter 3:18

For even Christ once suffered for sins, the just for the unjust, that he might bring us to God; being put to death, indeed, in the flesh, but made alive by the Spirit.

Treasury of Scripture Knowledge

Summary

And he said unto them the third time, Why, what evil hath he done? I have found no cause of death in him: I will therefore chastise him, and let him go.

Bible References

Why

1 Peter 1:19
but with the precious blood of Christ, as of a lamb without blemish, and without spot;
1 Peter 3:18
For even Christ once suffered for sins, the just for the unjust, that he might bring us to God; being put to death, indeed, in the flesh, but made alive by the Spirit.