All things are clean to the clean: but to them that are defiled, and to unbelievers, nothing is clean: but both their mind and their conscience are defiled.
I know, and am confident in the Lord Jesus, that nothing is unclean of itself; but to him that esteemeth any thing to be unclean, to him it is unclean.
But there is not knowledge in every one. For some until this present, with conscience of the idol: eat as a thing sacrificed to an idol, and their conscience, being weak, is defiled.
If a man carry sanctified flesh in the skirt of his garment, and touch with his skirt, bread, or pottage, or wine, or oil, or any meat: shall it be sanctified? And the priests answered, and said: No.
How much more shall the blood of Christ, who by the Holy Ghost offered himself unspotted unto God, cleanse our conscience from dead works, to serve the living God?