Proverbs 23:8-12

The morsel which thou hast eaten shalt thou vomit up, and lose thy sweet words.

Speak not in the ears of a fool: for he will despise the wisdom of thy words.

Remove not the old landmark; and enter not into the fields of the fatherless:

For their redeemer is mighty; he shall plead their cause with thee.

Apply thine heart unto instruction, and thine ears to the words of knowledge.