Romans 14:23

But he that maketh a difference between meats, if he eat is condemned, because he doth it not by faith: for every thing which is not of faith, is sin.

Romans 13:2

Wherefore he that sets himself against authority, resists the ordinance of God: and they who resist shall receive to themselves condemnation.

1 Corinthians 8:7

Howbeit there is not in all men this knowledge; but some having conscientious respect for the idol to this moment, eat the meat as sacrificed to the idol; and their conscience being weak, is defiled.

1 Corinthians 11:29-31

For he that eateth and drinketh unworthily, eateth and drinketh condemnation to himself, not distinguishing the Lord's body.

Romans 14:5

One man judgeth one day different from another day: another judgeth every day alike. Let every man be fully persuaded in his own mind.

Titus 1:15

All things indeed are clean to the clean: but to the defiled and to the unbelievers there is nothing clean; but their very mind and conscience are defiled.

Hebrews 11:6

But without faith it is impossible to be acceptable; for he must believe, who cometh unto God, that he exists, and is a rewarder of those who diligently seek him.

Treasury of Scripture Knowledge

Summary

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

Bible References

He that

1 Corinthians 8:7
Howbeit there is not in all men this knowledge; but some having conscientious respect for the idol to this moment, eat the meat as sacrificed to the idol; and their conscience being weak, is defiled.

Damned

Romans 13:2
Wherefore he that sets himself against authority, resists the ordinance of God: and they who resist shall receive to themselves condemnation.
1 Corinthians 11:29
For he that eateth and drinketh unworthily, eateth and drinketh condemnation to himself, not distinguishing the Lord's body.

Whatsoever

Titus 1:15
All things indeed are clean to the clean: but to the defiled and to the unbelievers there is nothing clean; but their very mind and conscience are defiled.
Hebrews 11:6
But without faith it is impossible to be acceptable; for he must believe, who cometh unto God, that he exists, and is a rewarder of those who diligently seek him.