2 Chronicles 18:29
"And the king of Israel said unto Jehoshaphat, I will disguise myself, and will go to the battle; but put thou on thy robes. So the king of Israel disguised himself; and they went to the battle."
Cross References (ranked by relevance)
And Saul disguised himself, and put on other raiment, and he went, and two men with him, and they came to the woman by night: and he said, I pray thee, divine unto me by the familiar spirit, and bring me him up, whom I shall name unto thee.
Can any hide himself in secret places that I shall not see him? saith the LORD. Do not I fill heaven and earth? saith the LORD.
The eye also of the adulterer waiteth for the twilight, saying, No eye shall see me: and disguiseth his face.
When he speaketh fair, believe him not: for there are seven abominations in his heart.
They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak.
So the prophet departed, and waited for the king by the way, and disguised himself with ashes upon his face.