1 Samuel 20:33-35

Amplified Bible

³³ Then Saul hurled his spear at him to strike him down, so Jonathan knew [without any doubt] that his father had decided to put David to death. ³⁴ Then Jonathan stood up from the table in the heat of anger, and ate no food on that second day of the new moon (month), for he grieved and worried about David because his father had dishonored him.

³⁵ In the morning Jonathan went out to the field for the meeting with David, and a young boy was with him.