Titus 1:15
To the pure all things are pure: but to them that are defiled and unbelieving is nothing pure; but even their mind and conscience is defiled.
Romans 14:20
For the sake of food, destroy not the work of God. All things indeed are pure; but it is evil for that man who eateth with offense.
Romans 14:23
And he that doubteth is damned if he eateth, because he eateth not from faith: for whatever is not from faith is sin.
Romans 14:14
I know, and am persuaded by the Lord Jesus, that there is nothing unclean by itself: but to him that esteemeth any thing to be unclean, to him it is unclean.
Matthew 15:18
But those things which proceed out of the mouth come forth from the heart; and they defile the man.
Acts 10:15
And the voice spoke to him again the second time, What God hath cleansed, that call not thou common.
Proverbs 21:4
A high look, and a proud heart, and the plowing of the wicked, is sin.
Haggai 2:13
Then said Haggai, If one that is unclean by a dead body shall touch any of these, shall it be unclean? And the priests answered and said, It shall be unclean.
Zechariah 7:5-6
Speak to all the people of the land, and to the priests, saying, When ye fasted and mourned in the fifth and seventh month, even those seventy years, did ye at all fast to me, even to me?
Luke 11:39-41
And the Lord said to 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.
1 Corinthians 6:12-13
All things are lawful to me, but all things are not expedient: all things are lawful for me, but I will not be brought under the power of any.
1 Corinthians 8:7
But there is not in every man that knowledge: for some with conscience of the idol to this hour eat it as a thing offered to an idol; and their conscience, being weak, is defiled.
1 Corinthians 10:23
All things are lawful for me, but all things are not expedient: all things are lawful for me, but all things edify not.
1 Corinthians 10:25
Whatever is sold in the provision market, that eat, asking no question for conscience' sake:
1 Corinthians 10:31
Whether therefore ye eat or drink, or whatever ye do, do all to the glory of God.
1 Corinthians 11:27-29
Wherefore, whoever shall eat this bread, and drink this cup of the Lord unworthily, shall be guilty of the body and blood of the Lord.
1 Timothy 4:3-4
Forbidding to marry, and commanding to abstain from meats, which God hath created to be received with thanksgiving by them who believe and know the truth.
1 Timothy 6:5
Perverse disputings of men of corrupt minds, and destitute of the truth, supposing gain to be godliness: from such withdraw thyself.
Hebrews 9:14
How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, cleanse your conscience from dead works to serve the living God?
Hebrews 10:22
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.