Psalm 7:12 New English Translation

¹²If a person^[a] does not repent, God will wield his sword.^[b]
He has prepared to shoot his bow.^[c]

Psalm 7:12 tn Heb “If he”; the referent (a person who is a sinner) has been specified in the translation for clarity. The subject of the first verb is understood as the sinner who fails to repent of his ways and becomes the target of God’s judgment (vv. 9, 14-16).
Psalm 7:12 tn Heb “if he does not return, his sword he wields.” The referent (God) of the pronominal subject of the second verb (“sharpens”) has been specified in the translation for clarity. The verb לָטַשׁ (latash) appears only five times in the Bible. It is typically taken as a reference to sharpening, as in 1 Sam 13:20. But the meaning “wield” known from Ugaritic, a close cognate language, seems to fit the context better. The following verbs describe past actions of having gotten instruments prepared for battle. It is more consistent with that setting to picture God taking his sword and swinging it as a final act of preparation or as an immediate threat.
Psalm 7:12 tn Heb “his bow he has stepped [on] and prepared it.” “Treading the bow” involved stepping on one end of it in order to bend and string it and thus prepare it for battle. The verbs are a perfect and a preterite, thus referring to past action.

New English Translation (NET)