Shared ground
These verses present an “if” statement repeated several times: if the speaker has done the evil he is accused of, then he accepts the consequences. The text’s explicit claim is not “I am sinless,” but “If I did this (the alleged wrong), then I deserve to fall.”
The wrongdoing he denies is specific: betraying someone who was “at peace” with him by repaying evil. He also claims he acted in the opposite direction toward an adversary—he “delivered” (rescued/spared) someone who opposed him without cause.
The self-curse in v. 5 is intentionally severe. He invites the enemy to chase him down, crush his life into the ground, and leave his “glory” in the dust. This functions as an oath of innocence, calling Yahweh to witness it.
Where interpretation differs
Two details are genuinely unclear.
First, the parenthetical line in v. 4 can be read in two ways: (1) a contrast—“I did not repay peace with evil; instead I helped even an undeserving enemy,” or (2) a concession that intensifies the claim—“even though he was my adversary without cause, I still spared him.” Either way, the line supports the speaker’s claim that he did not act treacherously.
Second, “my glory” can mean honor/reputation, or more broadly one’s whole “weight” in life (standing, dignity, vitality). The text itself does not define it beyond the image of being reduced to dust.
Why the disagreement exists
The passage refers back to an implied accusation (“this”) without naming it here, so readers infer details from the wider psalm and its headings or historical guesses. Also, Hebrew poetry often uses compressed phrasing; the parenthetical remark can attach to the sentence in more than one natural way. Finally, “glory” is a flexible word in Psalms, sometimes pointing to public honor and sometimes to the inner self’s dignity.
What this passage clearly contributes
It shows a model of calling on God as witness when one is accused: the speaker invites scrutiny and frames the issue in moral terms (betrayal vs. faithfulness). It also portrays wrongdoing as relational (repaying peace with harm), not only as private guilt. And it highlights that the speaker sees life, reputation, and survival as ultimately answerable to Yahweh’s judgment, not only to human enemies. Psalm 7:3–5