1 Samuel 20:18

Then Jonathan said to David, “Tomorrow is the New Moon [festival], and you will be missed because your seat will be empty.

1 Samuel 20:5

David said to Jonathan, “Behold, tomorrow is the New Moon [observance], and I should sit at the table to eat [the sacrificial meal] with the king; but let me go, so that I may hide myself in the field until the third evening.

1 Samuel 20:25

The king sat on his seat as on previous occasions, on his seat by the wall; then Jonathan stood up, and Abner [his commander] sat down by Saul’s side, 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, “Behold, tomorrow is the New Moon [observance], and I should sit at the table to eat [the sacrificial meal] with the king; but let me go, so that I may hide myself in the field until the third evening.