“Surely oppression maketh a wise man mad; and a gift destroyeth the heart.”
King James Version (KJV)
7:7 A gift - A bribe given to a wise man, deprives him of the use of his understanding. So this verse discovers two ways whereby a wise man may be made mad, by suffering oppression from others, or by receiving bribes to oppress others. And this also is an argument of the vanity of worldly wisdom that is so easily corrupted and lost.