1 Samuel 20:7

If he say thus, [it is] well,.... It is very well, it is very good and right in him to do so:

thy servant shall have peace; it will be a token that the wrath of the king was removed, and that his mind was well disposed towards David, and things had taken an happy turn, and would issue in his peace and prosperity:

but if he be very wroth; with Jonathan for giving leave, and with David for going away:

[then] be sure that evil is determined by him; that he has a settled obstinate malice in his heart, which is become implacable and inveterate, and confirmed in him; and that it is a determined point with him to slay David if possible, which he hoped to have an opportunity of doing at that time in which he was disappointed, and caused such wrath in him.