Questions: Didn't Yonatan hear that he sent guards after him and chased him to Nayot?

And he said to him: Yonatan thought that the guards weren't meant to kill him, just to bring him to him (Shaul) so that he (David) wouldn't run away. He brought evidence for this, that Shaul wouldn't do anything without his (Yonatan's) advice. If he wanted to kill him he would have told him...

Why would my father hide this matter from me? It is not so: It's possible that Yehonatan thought that Shaul chasing David to kill him was only due to the evil spirit that bothered him, but when he was in his right mind he had no intention to harm David, because he had already sworn to him (Yehonatan) by God, as it says God's life if he will die.

(1) There is but a step. With one step I left from being before him,¹Rashi’s interpretation follows the literal meaning. Others interpret this phrase figuratively, i.e., there is but a short distance between me and death—Radak. and he drove the spear into the wall. With that step, I was saved from death.

(1) Behold, tomorrow is the New Moon. The renewal of the moon.²From the word חָדָשׁ [=new]. He could not state that tomorrow is Rosh Chodesh, because Rosh Chodesh could only be declared by בֵּית דִין and the actual day of Rosh Chodesh is unknown until it is sanctified by בֵּית דִין. And of all those who eat at the king's table, no one declines from coming to the repast on the festive day.³The New Moon [=Rosh Chodesh] was celebrated as a festive day. See II Melachim 4:23 and Hosheia 2:13.

(2) And I usually sit with the king to eat. This is the present tense [meaning] 'and I am accustomed to sit with the king regularly, to eat beside him.'

And God be with you as with my father: With you in the matter of the kingship, that you may have victory over your enemies like God was with him.

And not if I still live: I won't ask from you if I still live when you rule, because I have no fear that you won't treat me with God's kindness.

And I will not die: because I know you will treat me with kindness, and it says kindness of God because they made a divine covenant, as it says and Yehonatan and David made a covenant. And David said to him, in a covenant of God you brought your servant, this is the covenant of God that is made between me and you, but what I am asking of you is that you don't remove your kindness from my house ever.

And not in destroying: meaning, even if God destroys the enemies of David from the earth until there is not one left, don't destroy my house, even though my father's family is included in David's enemies.

And not if I am still alive: Meaning, I'm not afraid if I'm still alive when you rule that you won't do God's kindness with me, and not [when] I die -- [meaning] even after my death I'm not afraid that your kindness will leave my house ever, and not in the time when God destroys the enemies of David from earth I'm not afraid that your kindness will leave my house, although he's from the family of enemies of David, and behold Yehonatan also made a covenant with the house of David -- meaning his covenant isn't only with David, but with the entire house of David to guard them from evil according to his ability, and Yehonatan cursed himself if he violated this covenant and betrayed David and his house by saying that God would wreak vengeance on the enemies of David if he betrayed the covenant.

(2) From David's enemies. Scripture euphemized. Its real meaning is that the The Holy One demanded the punishment of the transgression from David. When he transgressed the covenant, and said to Mefiboshes, "You and Tziva shall divide the field,"¹¹II Shmuel 19:30. a bas kol came forth, and said, 'Rechavam and Yorovom shall divide the kingdom.' And so did Targum Yonoson render, 'and Adonoy took retribution from David's enemies.'

(2) The marker stone. A stone which was a landmark for travelers.

And the king reclined on his seat: ... And what it means by Yehonatan got up is, after he sat next to his father he stood up and put Avner beside his father, because he didn't want to be next to his father in case he became angry with him over David, so he wouldn't be next to him to strike him. And David's place was empty.

(6) Similarly, it states: That I will cut off from thee the righteous and the wicked (Ezek. 21:8). The righteous ones were cut off because they did not try to restrain the wicked ones. That is why you find that King Josiah was held responsible for the acts of his generation, even though it is written concerning him: And like unto him there was no king before him (II Kings 23:25). How far should one go in reproving one’s neighbor? Rav said: Until his neighbor strikes him. Samuel contended: Until he curses him. R. Johanan held: Until he becomes angry. All three reached their conclusions from the same verse, where it is said: Then Saul’s anger was kindled against Jonathan, and he said unto him: “Thou son of perverse rebellion” (I Sam. 20:30). And then it is written: And Saul cast his spear at him to smite him (ibid., v. 33).

Because his father had shamed him: Meaning over two things he didn't eat, because he was saddened over David and because his father shamed him with word and deed.