Shared ground
Psalm 55:15 is a sharp, one-verse plea for the immediate removal of dangerous opponents. The speaker asks for sudden death and pictures it as a descent into Sheol (the realm of the dead). The verse itself supplies a brief reason: “wickedness” is not occasional but is settled “in their dwelling” and “in the midst of them.”
Explicitly, the text presents (1) a request for a sudden end, (2) vivid death imagery (“go down alive”), and (3) a moral rationale rooted in entrenched wrongdoing within a shared space or community.
Where interpretation differs
Some read “go down alive into Sheol” as intentionally literal-sounding language for an extraordinary collapse (like being swallowed up), while others read it as poetic intensity for a normal death that comes abruptly.
Some also take “them” broadly (a wider group threatening the city), while others think it targets a tighter circle connected to the betrayal described earlier in Psalm 55.
Why the disagreement exists
The verse uses compressed, highly charged poetry. “Sheol” can function as a general term for the grave/underworld, and “alive” can heighten the shock without requiring a report of a specific event. Also, the psalm shifts between city-wide trouble and personal betrayal, so the nearest referent for “them” is not spelled out.
What this passage clearly contributes
This verse shows that biblical lament can include severe, sudden-judgment language aimed at stopping people portrayed as deeply corrupt. It ties the requested outcome to the claim that evil is “in their dwelling” and “among them,” presenting wickedness as embedded in their social space rather than a private, hidden flaw. The imagery of “going down” reinforces the ancient picture of death as descent and underscores the speaker’s desire for an abrupt reversal (Psalm 49:14).