Titus 1:15

I know, and am persuaded by the Lord Jesus, that there is nothing unclean of itself: but to him that esteemeth any thing to be unclean, to him it is unclean.

For meat destroy not the work of God. All things indeed are pure; but it is evil for that man who eateth with offence.

All things are lawful for me, but all things are not expedient: all things are lawful for me, but all things edify not.

Forbidding to marry, and commanding to abstain from meats, which God hath created to be received with thanksgiving of them which believe and know the truth. For every creature of God is good, and nothing to be refused, if it be received with thanksgiving:

But those things which proceed out of the mouth come forth from the heart; and they defile the man.

And he that doubteth is damned if he eat, because he eateth not of faith: for whatsoever is not of faith is sin.

Whether therefore ye eat, or drink, or whatsoever ye do, do all to the glory of God.

And the voice spake unto him again the second time, What God hath cleansed, that call not thou common.

All things are lawful unto me, but all things are not expedient: all things are lawful for me, but I will not be brought under the power of any. Meats for the belly, and the belly for meats: but God shall destroy both it and them. Now the body is not for fornication, but for the Lord; and the Lord for the body.

Howbeit there is not in every man that knowledge: for some with conscience of the idol unto this hour eat it as a thing offered unto an idol; and their conscience being weak is defiled.

And the Lord said unto him, Now do ye Pharisees make clean the outside of the cup and the platter; but your inward part is full of ravening and wickedness. Ye fools, did not he that made that which is without make that which is within also? But rather give alms of such things as ye have; and, behold, all things are clean unto you.

Whatsoever is sold in the shambles, that eat, asking no question for conscience sake:

Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience, and our bodies washed with pure water.

Wherefore whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord. But let a man examine himself, and so let him eat of that bread, and drink of that cup. For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord’s body.

Perverse disputings of men of corrupt minds, and destitute of the truth, supposing that gain is godliness: from such withdraw thyself.

An high look, and a proud heart, and the plowing of the wicked, is sin.

Then said Haggai, If one that is unclean by a dead body touch any of these, shall it be unclean? And the priests answered and said, It shall be unclean.