David said to Jonathan, “Behold, tomorrow is the new moon, and I should not fail to sit at table with the king. But let me go, that I may hide myself in the field till the third day at evening.
Here, I. David makes a representation to Jonathan of his present troubles. While Saul lay bound by his trance at Naioth David escaped to the court, and got to speak with Jonathan. And it was happy for him that he had such a friend at court, when he had such an enemy on the throne.
Commenting on 1 Samuel 20:1-8
And David said unto Jonathan,.... Moved that the following method might be taken as a trial of the disposition of Saul's mind towards David: behold, tomorrow is the new moon; the first day of the month, which was kept solemnly with burnt offerings and peace offerings, see Num 10:10.
David said unto Jonathan, Behold, to-morrow the new moon, and I should not fail to sit with the king at meat--The beginning of a new month or moon was always celebrated by special sacrifices, followed by feasting, at which the head of a family expected all its members to be present.