Shared ground
The passage presents Saul as desperate on the eve of battle: the Philistines are attacking, and Saul believes God is no longer answering him through the usual channels (prophets and dreams). The figure identified as Samuel treats Saul’s situation as already decided, not something that can be changed by new advice.
Samuel’s message is not new. It repeats earlier words: Yahweh has taken the kingdom from Saul and given it to David. The text also gives a moral explanation: this loss is tied to Saul’s failure to obey Yahweh’s voice, especially in the earlier conflict involving Amalek.
The outcome announced is immediate and comprehensive: Israel will be handed over to the Philistines, and Saul and his sons will die “tomorrow.” These are explicit narrative claims in vv. 15–19.
Where interpretation differs (only where needed)
1) Is this really Samuel? Some readers take the text at face value: God allows Samuel to appear and speak a true final word. Others argue that, because the scene comes through a medium, the apparition cannot be Samuel; it is a deceptive spirit (or a vision-like experience) that still happens to speak words consistent with earlier prophecy.
2) What does “you and your sons will be with me” mean? Some take it as a statement about the shared location of the dead after death, without specifying their final destiny. Others think it implies something more specific about Saul’s post-mortem state (either reassurance or condemnation). A third view is that it is simply a blunt way of saying, “you will be dead like I am,” without giving details about the afterlife.
Why the disagreement exists
The narrative strongly identifies the speaker as “Samuel,” and his words match prior prophetic judgment (1 Samuel 15:26). But the method of contact—using a medium—creates tension with broader biblical prohibitions and raises the question of whether the narrative is reporting a permitted exception, a deception, or Saul’s perception.
The phrase “with me” is brief and undefined. The text gives a time marker (“tomorrow”) and a result (death), but it does not explain the nature of the state of the dead or whether “with me” refers to place, condition, or simply shared death.
What this passage clearly contributes
This unit portrays Yahweh’s rejection of Saul as complete and irreversible by this point: Yahweh is described as having “departed” and even as Saul’s adversary (v. 16). The transfer of kingship to David is framed as Yahweh’s action (v. 17), and Saul’s downfall is framed as connected to prior disobedience (v. 18). The text also links personal judgment (Saul and his sons) with national consequence (Israel’s defeat), showing how the king’s fate and the people’s military fate are intertwined in the story.
It also highlights the limits of seeking guidance when earlier revelation has already given the verdict: Saul wants tactical direction (“what I shall do”), but Samuel’s response treats the deeper issue as relational and covenantal—Yahweh’s stance toward Saul—rather than a lack of information.