1 Samuel 20:18

Then Jonathan said to him, Tomorrow is the new moon: and it will be seen that you are not present, for there will be no one in your seat.

1 Samuel 20:5

And David said to Jonathan, Tomorrow is the new moon, and I will not be seated with the king at his table: but let me go to a safe place in the country till the evening.

1 Samuel 20:25

And the king took his seat, as at other times, by the wall: and Jonathan was in front, and Abner was seated by Saul's side, but there was no one in David's seat.

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
And David said to Jonathan, Tomorrow is the new moon, and I will not be seated with the king at his table: but let me go to a safe place in the country till the evening.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain