Before his footstool

[CyrilSebastian]

In Psalm 99, Verse 5 states:

 Exalt the Lord, our God;

bow down before his footstool;
holy is God!
Is footstool a reference to the ark?

 

[michaelhager]

It appears to be.

From the USCCB web site

1 Chronicles 28:2
2 King David rose to his feet and said: “Hear me, my kinsmen and my people. It was my purpose to build a house of repose myself for the ark of the covenant of the LORD, the footstool for the feet of our God; and I was preparing to build it.

Psalm 132:7-8
7 Let us enter his dwelling;
let us worship at his footstool.”
8 “Arise, LORD, come to your resting place,
you and your mighty ark.