Acts 23:5
"Then said Paul, I wist not, brethren, that he was the high priest: for it is written, Thou shalt not speak evil of the ruler of thy people."
Cross References (ranked by relevance)
Exodus 22:28
29
Thou shalt not revile the gods, nor curse the ruler of thy people.
Ecclesiastes 10:20
15
Curse not the king, no not in thy thought; and curse not the rich in thy bedchamber: for a bird of the air shall carry the voice, and that which hath wings shall tell the matter.
2 Peter 2:10
But chiefly them that walk after the flesh in the lust of uncleanness, and despise government. Presumptuous are they, selfwilled, they are not afraid to speak evil of dignities.