What does Psalm 63:10 mean?

To be "given over" to something means to fall under its control. When someone is under the power of the sword, it means they have been slain in battle or by an enemy's weapon (Psalm 22:20; Job 5:20; Ezekiel 35:5). This psalm was written about David's evacuation from an armed rebellion (2 Samuel 15:13–14). What David predicts here came to pass: his enemies suffered tremendous losses and the conspirators were killed (2 Samuel 18:6–8, 15). This verse also refers to "jackals" or "foxes," meaning a scavenging animal from the wilderness. Throughout history, fallen bodies from major battles have often been handled by animals before they can be properly buried.

When Jesus returns to earth to establish His millennial kingdom, He will destroy His enemies with the power of the sword. Revelation 19:15 describes a sharp sword proceeding from His mouth that strikes down the nations. Verses 17 and 18 report an invitation an angel gives. He calls on the birds of the air to "come, gather for the great supper of God, to eat the flesh of kings, the flesh of captains, the flesh of mighty men, the flesh of horses and their riders, and the flesh of all men, both free and slave, both small and great." Verse 21 reports that the sword that proceeds from Jesus' mouth also slays the rest of the followers of the beast and false prophet.