Saul commands his servants and Jonathan to kill David
Jonathan warns David and intercedes for him before Saul (vv. 1–5).
Jonathan argues the case for David from his record of service and innocence.
Saul swears an oath that David will not be put to death, and David returns to Saul's service (vv. 6–7)
This continues the pattern of Saul making rash oaths.
After David's next military victory the spirit of distress returns, and Saul tries to pin David to the wall with his spear again (vv. 9–10).
David flees to Samuel at Ramah, where his refuge is with Samuel, the prophet who anointed him (v. 18).
Samuel is the source of David's legitimacy as the anointed one.
Samuel is therefore a source of comfort for David in the work the LORD is performing with him.
Saul sends three successive groups of messengers, and the Spirit of God comes upon each group and they prophesy, instead of capturing David (vv. 20–21).
The Spirit does not merely protect David by hiding him, but glorifies Himself in the prophesying of the captors-to-be.
Saul himself goes to Naioth and is overcome by the Spirit, stripping off his robes and prophesying all day and night before Samuel (vv. 23–24).
The phrase "Is Saul also among the prophets?" appeared in chapter 10 when the Spirit first came upon Saul as a sign of his anointing.
Now, the LORD is restraining and humiliating Saul through the prophesying, having Saul prophesy legitimately despite his rejection of the LORD.
The Spirit of the LORD will not be weaponized against the LORD's anointed.
Every power Saul marshals against David turns into an occasion for God's sovereignty to be displayed.
As for David, when weapons are turned against Christ, the LORD turns them around on the enemy, which for Christ is death turned against death.