'Defilement' in the Bible

So they brought Jesus from Caiaphas's house to the Praetorium. It was the early morning, and they would not enter the Praetorium themselves for fear of defilement, and in order that they might be able to eat the Passover.

Having therefore these promises, beloved friends, let us purify ourselves from all defilement of body and of spirit, and secure perfect holiness through the fear of God.

For if the blood of goats and bulls and the ashes of a heifer sprinkling those who have contracted defilement make them holy so as to bring about ceremonial purity,

And, corresponding to that figure, the water of baptism now saves you--not the washing off of material defilement, but the craving of a good conscience after God--through the resurrection of Jesus Christ,