Psalm 58:10
8 Let them be like a snail that melts away as it moves along. Let them be like stillborn babies that never see the sun. 9 Before the kindling is even placed under your pots, he will sweep it away along with both the raw and cooked meat. 10 The godly will rejoice when they see vengeance carried out; they will bathe their feet in the blood of the wicked. 11 Then observers will say, “Yes indeed, the godly are rewarded. Yes indeed, there is a God who judges in the earth.”
Psalm 68:23
21 Indeed, God strikes the heads of his enemies, the hairy foreheads of those who persist in rebellion. 22 The Lord says, “I will retrieve them from Bashan. I will bring them back from the depths of the sea, 23 so that your feet may stomp in their blood, and your dogs may eat their portion of the enemies’ corpses.” 24 They see your processions, O God—the processions of my God, my king, who marches along in holy splendor. 25 Singers walk in front; musicians follow playing their stringed instruments, in the midst of young women playing tambourines.
Notes and References
"... Ritual washing of the hands and feet occurs frequently (e.g., Exodus 30:19). Although it sounds rather gruesome, God’s people can look forward to bathing their feet in the blood of wicked (Psalm 58:10; 68:23). Feet also figure in situations in which someone has authority over a person or place. People have rights over land touched by their feet (Deuteronomy 2:5; 11:24; Joshua 1:3; Psalm 122:2) and lose rights over land their feet no longer walk on (2 Chronicles 33:8). Related to this is the idea that vanquished enemies are under the feet of their conquerors (Joshua 10:24, 1 Kings 5:3; Psalm 8:6; 45:5; 110:1; Isaiah 49:23; 60:14; Malachi 4:3) ..."
Ryken, Leland Dictionary of Biblical Imagery (p. 971) InterVarsity Press, 1998