Shared ground
Abimelech treats the divine warning as urgent and public. He gets up early, gathers his servants, and reports “all these things,” and the household reacts with real fear. The text presents Abimelech as a ruler who recognizes that a private moral failure can become a public threat.
Abimelech then confronts Abraham with pointed questions. Explicitly, he describes Abraham’s action as harm “to us,” not just to Abimelech personally, and as something that could have brought “a great sin” on Abimelech and his kingdom. Abimelech also claims he had not wronged Abraham, and he frames Abraham’s deception as crossing a basic moral line (“deeds…that ought not to be done”).
Where interpretation differs (only where needed)
Two main questions are left open by the wording.
First, what exactly Abimelech told his servants (“all these things”): some read it as the full dream message and details; others think he mainly relayed the warning and its implications. The text itself emphasizes the effect (fear) more than the exact content.
Second, what “a great sin” means: it can be read primarily as moral guilt before God, or as moral guilt along with the public disaster and scandal a king’s household would face if Sarah were treated as Abimelech’s wife. The immediate context supports moral seriousness, while the “kingdom” language points to wider social fallout too.
Why the disagreement exists
The passage uses broad phrases (“all these things,” “great sin,” “what did you see”) without spelling out details. Because the narrator does not pause to define these terms, interpreters weigh nearby story elements differently—Abimelech’s dream warning, the household’s fear, and the political scope (“my kingdom”).
What this passage clearly contributes
This scene highlights shared responsibility and real consequences: one man’s deception can place many others in danger. It also shows an outsider king publicly holding Abraham accountable, reversing expected roles and sharpening the story’s moral tension. Abimelech’s repeated “what” questions (Hebrew mah) press for both the facts and the rationale, setting up Abraham’s explanation in the next verses and showing that motives matter, not only outcomes (see Genesis 20:11).