15 In v. 2 the psalmist describes his enemies as those who “confront” him (קָמִים [qamim], literally, “rise up against him”). Now, using the same verbal root (קוּם, qum) he asks the Lord to rise up (קוּמָה, qumah) in his defense.
16 Elsewhere in the psalms the particle כִּי (ki), when collocated with a perfect verbal form and subordinated to a preceding imperative directed to God, almost always has an explanatory or causal force (“for, because”) and introduces a motivating argument for why God should respond positively to the request (see Pss 5:10; 6:2; 12:1; 16:1; 41:4; 55:9; 56:1; 57:1; 60:2; 69:1; 74:20; 119:94; 123:3; 142:6; 143:8). (On three occasions the כִּי is recitative after a verb of perception [“see/know that,” see Pss 4:3; 25:19; 119:159]). If כִּי is taken as explanatory here, then the psalmist is arguing that God should deliver him now because that is what God characteristically does. However, such a motivating argument is not used in the passages cited above. The motivating argument usually focuses on the nature of the psalmist’s dilemma or the fact that he trusts in the Lord. For this reason it is unlikely that כִּי has its normal force here. Most scholars understand the particle כִּי as having an asseverative (emphasizing) function here (“indeed, yes”; leaves the particle untranslated).
17 If the particle כִּי (ki) is taken as explanatory, then the perfect verbal forms in v. 7b would describe God’s characteristic behavior. However, as pointed out in the preceding note on the word “yes,” the particle probably has an asseverative force here. If so, the perfects may be taken as indicating rhetorically the psalmist’s certitude and confidence that God will intervene. The psalmist is so confident of God’s positive response to his prayer, he can describe God’s assault on his enemies as if it had already happened. Such confidence is consistent with the mood of the psalm, as expressed before (vv. 3–6) and after this (v. 8). Another option is to take the perfects as precative, expressing a wish or request (“Strike all my enemies on the jaw, break the teeth of the wicked”). See §30.5.4c, d. However, not all grammarians are convinced that the perfect is used as a precative in biblical Hebrew.
18 The expression break the teeth may envision violent hand-to hand combat, though it is possible that the enemies are pictured here as a dangerous animal (see Job 29:17).
19 In the psalms the Hebrew term רְשָׁעִים (résha’im, “wicked”) describes people who are proud, practical atheists (Ps 10:2, 4, 11) who hate God’s commands, commit sinful deeds, speak lies and slander (Ps 50:16–20), and cheat others (Ps 37:21). They oppose God and his people.