3:7 The writer continued to pray for complete deliverance. Evidently David was so certain God would save him that he described his enemy as already defeated. Perhaps he was referring to God's faithfulness in defeating former enemies. The Hebrew verbs permit either interpretation. The imagery is very graphic and even somewhat grotesque from the viewpoint of a modern reader, but Hebrew poets often expressed their thoughts in strong, vivid terms.
3:8 The conclusion contains a testimony from the writer that should serve as a lesson to the reader (cf. Jon. 2:9), and a final prayer. In view of the content of this psalm the blessing on God's people David may have had in mind could be salvation from their enemies when they call on Him.
This encouraging psalm teaches us that when God's elect call on Him for deliverance from enemies who are behaving contrary to the will of God they can count on His salvation.
