And Jonathan said unto David, O Lord God of Israel
Or by the Lord God of Israel, I swear unto thee; for this is the form of the oath, as Jarchi and Kimchi observe:
when I have sounded my father about tomorrow any time, [or] the third
searched, inquired, and found out how his disposition is:
and, behold, [if there be] good toward David;
if he is well disposed to him, as may appear by speaking respectfully of him, or kindly inquiring after him, and by being satisfied with the account given him:
and I then send not unto thee, and show it thee;
then let the vengeance of God fall upon me in some remarkable manner or another, as follows; or "shall I not then send unto thee, and show it thee" F20? certainly I will; that is, I will send a messenger to thee to acquaint thee with it, who shall tell it, and cause thee to hear it, as from myself.