Shared ground
Saul’s outburst is triggered by David’s absence, but it lands on Jonathan. The text explicitly shows Saul using public shame and family-targeted insults to pressure his son, and using the title “son of Jesse” to frame David as an outsider and rival rather than as a loyal servant.
Saul also makes the conflict about succession. Explicitly, he claims that if David stays alive Jonathan will not be “established,” and that “your kingdom” will not stand. Saul’s fear is political and dynastic, not just personal irritation.
Jonathan’s response is framed as a moral challenge, not a power play: he asks why David should die and what David has done. Saul answers with attempted violence. Narratively, the spear throw functions as proof that Saul’s intent is settled, and it produces a rupture inside Saul’s household.
Where interpretation differs
Some readers think Saul’s language about Jonathan’s future (“you will not be established, nor your kingdom”) is mainly a clear-eyed political reality: any rising rival endangers the heir. Others read it as more self-serving and paranoid: Saul uses the logic of succession to justify an unjust killing, even though he offers no concrete charge against David in this scene.
There is also some difference in how Jonathan’s grief is weighed in v.34. The text states he is grieved “for David” and because Saul has shamed him; some emphasize loyalty to David as the dominant motive, while others think the shame and family breakdown are equally central.
Why the disagreement exists
The passage reports Saul’s reasoning without directly endorsing it. It also gives two stated reasons for Jonathan’s distress (grief for David; shame from Saul), leaving room for different emphasis. Finally, the insult language is intense and culturally loaded, so interpreters differ on how much of Saul’s speech is calculated politics versus uncontrolled rage.
What this passage clearly contributes
This scene clarifies the basic shape of the conflict: Saul treats David’s continued life as incompatible with his own family’s future, and he is willing to kill to resolve that threat. Jonathan is portrayed as asking for justice (“what has he done?”) and refusing to accept a death sentence without stated wrongdoing. Saul’s spear throw shows how power can bypass reasons and move straight to force, and it marks the point where Jonathan “knows” Saul’s plan is fixed, setting up the urgent protection of David that follows (1 Samuel 20:30–34).
