In the Bible the term "feet" is often used in a metaphorical way to mean "one's person"; i.e., it's used synonymously for the man himself. A classic example found in both the Old and New Testaments is found in Psalm 8:6 in reference to mankind:
"Thou made him to have dominion over the works of thy hands;
thou has put all things under his feet."
This same expression "under his feet" is also used in a prophecy concerning Christ and his enemies. It's a prophecy found in I Corinthians 15:25 and 27; Ephesians 1:22; and Hebrews 2:8, and its meaning is crystal clear. God has given "all power," meaning all authority in heaven and in earth, to Christ (Matthew 28:18). And eventually we will see "all" under his rule -- but we don't see this "yet" (Hebrews 2:8). Nevertheless, this is a very important prophecy that we as Christians can take comfort in. Unfortunately, however, it is nearly always confused with what is, arguably, a still greater prophecy, the Footstool Prophecy:
"The Lord" (God the Father) "said unto my Lord" (Christ), 'Sit thou at my right hand, until I make thine enemies thy footstool.'"
(Psalm 110:1, KJV; see also Mark 12:36; Luke 20:43; Acts 2:35; Hebrews 1:13, 10:13, CV). The reader should note that God tells us no less than 6 times in the Bible that He will makes Christ's enemies Christ's "footstool." Now 6 is the number of man (Revelation 13:18), man having been created on the sixth day of the week. This would indicate that this prophecy concerns MAN, what God will do with mankind!
In addition to this, some Greek manuscripts also repeat this prophecy of Christ's "footstool" in Matthew 22:44 (see e.g., the KJV), making a total of 7 times in which this prophecy can be found in the Bible! And 7 is God's number of completeness and perfection, which means this prophecy points to the completion and the perfection of the work of God! How foolish, therefore, to ignore this oft-repeated prophecy! But God takes pleasure in hiding things (Proverbs 25:2), and He has caused this major prophecy to be written in a veiled language which, seemingly, no one has taken the trouble of deciphering. Obviously to understand its meaning, we will have to understand the meaning of a word that is completely unfamiliar to us in biblical terminology: the word "footstool."
In order to resolve the issue, I examined more than 10 different Bible dictionaries for their definition of the word "footstool." And while none of them gave a precise definition, a few of them noted that this term was often used in reference to God's temple--which is true. There are 4 times in the Old Testament in which this term is substituted for the word "temple." Here's an example:
"How hath the Lord...cast down from heaven unto the earth the beauty of Israel, and remembered not his footstool in the day of his anger!"
(Lamentations 2:1; see also in I Chronicles 28:2; Psalm 99:5, 132:7). So with this term "footstool" actually synonymous with God's temple, the most logical way to define "footstool" is to define the word "temple." And this is easy. The temple was a "dwelling place" (I Kings 8:13; II Chronicles 6:2; Matthew 23:21). This, then, is the meaning of "footstool." It's a "dwelling place"!
So what does God mean, then, when He repeatedly says that He will make Christ's enemies his "dwelling place"? How can Christ "dwell" within his enemies?!
There is only one possible answer. And anyone who is really familiar with the Bible has already guessed it: God is going to place Christ's spirit, which is the spirit of God (Romans 8:9), within Christ's enemies. Thus, Christ will be "in" them, even as he is now "in" God's saints (verse 10). In other words, Christ's enemies will then become the temple of God, even as God's saints are already His temple, His dwelling place upon this earth (II Corinthians 6:16)! (Note: This is why God calls this earth His "footstool" in Matthew 5:35.)
What we've uncovered here from the Scriptures is proof that all of Christ's enemies will become converted through the indwelling of God's holy spirit. Not a one of his past, present, or future enemies will be left unconverted! As a result, all of mankind will no longer be at odds with their Maker, and God shall have kept His promise to make Christ's enemies "at peace with him" (Proverbs 16:7, CV)!
-- brixken7