Romans 14:16 Meaning

14I 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.

15But if thy brother be grieved with thy meat, now walkest thou not charitably. Destroy not him with thy meat, for whom Christ died.

16Let not then your good be evil spoken of:

17For the kingdom of God is not meat and drink; but righteousness, and peace, and joy in the Holy Ghost.

18For he that in these things serveth Christ is acceptable to God, and approved of men.