Shared ground
These verses present a complaint-prayer that opens with an urgent request to Yahweh for protection. Explicitly, the speaker asks to be “delivered” and “preserved” from people described as evil and violent (v.1). The threat includes more than open aggression: the opponents deliberately plan harm “in their hearts” and keep organizing as if for conflict (v.2). Their words are also treated as a real weapon—crafted to injure, like a serpent’s tongue, with danger compared to hidden venom (v.3). “Selah” marks a pause after this charge.
The passage assumes that God can intervene in situations where human hostility is both physical and verbal. It also assumes that speech can be genuinely destructive in community life, not merely “hurt feelings.”
Where interpretation differs (only where needed)
Two main questions vary.
First, “the evil man” / “the violent man” (singular) may refer to one main enemy, or it may be a representative way of describing a group. The plural descriptions in vv.2–3 (“those who devise…,” “they continually gather…,” “their tongues…”) can fit either scenario.
Second, “gather… for war” can be read as literal military action or as coordinated hostility (planning, intimidation, organized opposition). Both fit the wider description of plotting and weaponized speech.
Why the disagreement exists
The text uses vivid poetry rather than a detailed report. It shifts between singular labels (v.1) and plural actions (vv.2–3), and it uses metaphor (snake/venom) that can point to several kinds of harmful speech (deception, slander, threats) without narrowing to one.
What this passage clearly contributes
These opening lines contribute a compact picture of danger that is moral (“evil”), physical (“violent,” “war”), internal (premeditated “in their hearts”), and social/communicative (poisonous speech). They also frame prayer as an appropriate response to coordinated harm: the speaker does not merely describe the threat but brings it to Yahweh as the one able to rescue and protect. The “Selah” underscores the seriousness of the accusation and invites the reader/hearer to sit with the weight of words that can wound like venom.