John 7:18

18 Whoever speaks on their own does so to gain personal glory, but he who seeks the glory of the one who sent him is a man of truth; there is nothing false about him.

Read John 7:18 Using Other Translations

He that speaketh of himself seeketh his own glory: but he that seeketh his glory that sent him, the same is true, and no unrighteousness is in him.
The one who speaks on his own authority seeks his own glory; but the one who seeks the glory of him who sent him is true, and in him there is no falsehood.
Those who speak for themselves want glory only for themselves, but a person who seeks to honor the one who sent him speaks truth, not lies.