Romans 14:20

I know and am convinced in the Lord Jesus that nothing is defiled in itself; but to him who considers anything to be defiled, to him it is defiled.

For if because of food your brother is grieved, you are no longer walking according to love. Do not destroy with your food him for whom Christ died.

For through your knowledge he who is weak is ruined, the brother for whose sake Christ died.

And in that way, by sinning against the brothers and wounding their conscience when it is weak, you sin against Christ.

To the pure, all things are pure, but to those who are defiled and unbelieving, nothing is pure, but both their mind and their conscience are defiled.

But solid food is for the mature, who because of practice have their senses trained to discern both good and evil.