Dictionary of Biblical Words:
First done by our Lord in John 13 It is not a bathing all over as at conversion in the new birth, which never needs repeating, but is merely to remove defilement, contracted by the feet which are in contact with this world. It is hardly necessary to say both washings are with water, not with blood. That in John 13 is a figure of what Christ does now when we wander, sometimes directly and sometimes through the medium of a fellow-Christian. It is typified in Num. 19 and consists practically in the application of the water of the word in power to my sin, showing its evil in connection with the death of Christ (ashes of heifer), which has put it away, thus leading to confession and restoration. See CONFESSION, FAILURE, &c.
Boyd’s Bible Dictionary:
Kings used them
(2 Chron. 9:18). God’s footstool (1 Chron. 28:2; Psa. 99:5).
Concise Bible Dictionary:
The usual accompaniment of a throne (2 Chron. 9:18). The earth is the footstool of God's throne in the heavens (Isa. 66:1; Matt. 5:35). It is symbolical of “the place of rest:” David had it on his heart to build a house of rest for the ark of the covenant of the Lord, and for the “footstool” of God, wherein God could find rest among His people, and where He was to be worshipped (1 Chron. 28:2; Psalm 99:5). It is also symbolical of “subjection to power:” the Lord Jesus must reign until all His enemies are made His footstool (Psa. 110:1; Matt. 22:44; Acts 2:35; Heb. 1:13).
Strong’s Dictionary of Greek Words:
Meaning:
a primary word; a "foot" (figuratively or literally)