A common motif found in Ancient Near East reliefs shows a monarch placing his foot on his enemy. One illustration of this is the large relief showing the Assyrian King Tiglath-Pileser III (reigned 745-727 B.C.) with his foot on the neck of an enemy. Tiglath-Pileser III is known as Pul in the Bible.
Pul king of Assyria invaded the land, and Menahem paid him a thousand talents of silver to gain his support and to solidify his control of the kingdom. (2 Kings 15:19 NET)
So the God of Israel stirred up King Pul of Assyria (that is, King Tiglath-pileser of Assyria), and he carried away the Reubenites, Gadites, and half-tribe of Manasseh and took them to Halah, Habor, Hara, and the river of Gozan, where they remain to this very day. (1 Chronicles 5:26 NET)
The Assyrian relief below is displayed in the British Museum.
Here is a closeup of what we are seeking to illustrate.
Several biblical passages come to mind in this connection.
When they brought the kings out to Joshua, he summoned all the men of Israel and said to the commanders of the troops who accompanied him, “Come here and put your feet on the necks of these kings.” So they came up and put their feet on their necks. (Joshua 10:24 NET)
Here is the LORD’s proclamation to my lord: “Sit down at my right hand until I make your enemies your footstool!” (Psalm 110:1 NET)
Peter quotes Psalm 110:1 to show that Jesus is now seated on the throne of David at the right hand of God (Acts 2:35).
And Paul says,
For he must reign until he has put all his enemies under his feet. (1 Corinthians 15:25 NET)
The last enemy is death (1 Corinthians 15:26).