Romans 14:23
But he that doubteth is condemned if he eat, because he doeth it not from faith; but every thing which is not from faith is sin.
Romans 13:2
He therefore that setteth himself against the authority resisteth what God hath ordained; and they a who resist will bring upon themselves judgment.
1 Corinthians 8:7
But there is not in all men this knowledge; for some, with a conscience directed toward the idol even now, eat of it as a thing offered in sacrifice to an idol, and their conscience, being weak, is defiled.
1 Corinthians 11:29-31
for he that eateth and drinketh eateth and drinketh judgment to himself, if he do not discern the body.
Romans 14:5
One man esteemeth one day above another; another esteemeth every day alike: let each one be fully persuaded in his own mind. He that regardeth the day, regardeth it to the Lord;
Titus 1:15
To the pure all things are pure; but to the defiled and unbelieving nothing is pure, but both their mind and conscience are defiled.
Hebrews 11:6
But without faith it is impossible to please him; for he that cometh to God must believe that he is, and that he is a rewarder of those who diligently seek him.