18 Then Jonathan said to David, “Tomorrow is the New Moon, and you will be missed if your seat is empty.
1 Samuel 20:18 Cross References - BSB
1 Samuel 20:5
5 So David told him, “Look, tomorrow is the New Moon, and I am supposed to dine with the king. Instead, let me go and hide in the field until the third evening from now.
1 Samuel 20:25
25 He sat in his usual place by the wall, opposite Jonathan and beside Abner, but David’s place was empty.