C. F. Keil and Franz Delitzsch on 1 Samuel 20:7

1Sa 20:7

“If thy father says, It is well, there is peace to thy servant (i.e., he cherishes no murderous thoughts against me); but if he be very wroth, know that evil is determined by him.” כּלה, to be completed; hence to be firmly and unalterably determined (cf. 1Sa 25:17; Est 7:7). Seb. Schmidt infers from the closing words that the fact was certain enough to David, but not to Jonathan. Thenius, on the other hand, observes much more correctly, that “it is perfectly obvious from this that David was not quite clear as to Saul’s intentions,” though he upsets his own previous assertion, that after what David had gone through, he could never think of sitting again at the king’s table as he had done before.