1 Samuel 20:10-12

20:10 David said to Jonathan, “Who will tell me if your father answers you harshly?” 20:11 Jonathan said to David, “Come on. Let’s go out to the field.”

When the two of them had gone out into the field, 20:12 Jonathan said to David, “The Lord God of Israel is my witness. I will feel out my father about this time the day after tomorrow. If he is favorably inclined toward David, will I not then send word to you and let you know?