Shared ground
These verses finish the immediate problem created in the prior scene: David will not march with the Philistine forces. Achish gives a clear, time-specific order: leave early, as soon as there is enough light to travel (explicit in the text). David complies promptly, leaving with the men who came with him (explicit in the text).
The closing line draws a sharp narrative split (explicit in the text): David goes back toward Philistine territory, while the Philistine army advances to Jezreel. The storyteller is separating David from the coming battle and moving the spotlight to the next major event.
Where interpretation differs
Two details invite different readings.
First, Achish tells David to leave “with the servants of your lord.” Some take “your lord” to mean Achish, so the phrase refers to Achish’s own attendants attached to David’s unit. Others think the wording points beyond Achish—either a higher authority in the Philistine coalition or David’s own “master” in the sense of David’s primary allegiance—so it reads as a more awkward, politically careful way to talk about David’s men.
Second, “return into the land of the Philistines” can be heard broadly (back to Philistine-controlled territory) or more specifically (back to David’s base, such as Ziklag). The verse itself does not name the destination.
Why the disagreement exists
The disagreements come from ambiguity in the relational phrase “your lord” and from the passage’s brevity. The narrator summarizes movements without clarifying every reference point, and the story’s wider setting (multiple Philistine rulers; David’s unusual status as a foreign commander) makes more than one referent plausible.
What this passage clearly contributes
The text decisively removes David from the Philistine campaign at the last possible moment (explicit narrative claim). It also frames the next storyline by geographically and temporally separating two movements (explicit narrative claim): David’s return and the Philistines’ advance to Jezreel. Theologically by inference, the passage supports a recurring theme in 1 Samuel: major outcomes can hinge on ordinary, timed decisions by human authorities (here, an early-morning dismissal) that redirect the course of events without the narrator needing to explain every motive.
1 Samuel 29:10–11