1 Samuel 20:18
Then Jonathan said to him, "Tomorrow [is] the new moon, and you will be missed, for your seat will stay empty.
1 Samuel 20:5
David said to Jonathan, "Look, tomorrow [is] the new moon, and I should certainly sit with the king to eat. You must send me away so that I can hide myself in the field until the third evening.
1 Samuel 20:25
The king sat at his seat {as before}, the seat by the wall, and Jonathan got up, and Abner sat beside Saul, but David's place was empty.
Treasury of Scripture Knowledge
Summary
Then Jonathan said to David, To morrow is the new moon: and thou shalt be missed, because thy seat will be empty.
New moon
Bible References
New moon
1 Samuel 20:5
David said to Jonathan, "Look, tomorrow [is] the new moon, and I should certainly sit with the king to eat. You must send me away so that I can hide myself in the field until the third evening.