1 Samuel 20:12

“and Jonathan said, “By the LORD, the God of Israel, I will sound out my father by this time tomorrow or the next day. If he is favorable toward you, will I not send for you and tell you?”

“And Jonathan said unto David, O Lord God of Israel, when I have sounded my father about to morrow any time, or the third day, and, behold, if there be good toward David, and I then send not unto thee, and shew it thee;”

“And Jonathan said unto David, Jehovah, the God of Israel, be witness: when I have sounded my father about this time to-morrow, or the third day, behold, if there be good toward David, shall I not then send unto thee, and disclose it unto thee?”