Psalms 99:5

Worship at his footstool - Probably meaning the ark on which the Divine glory was manifested. Sometimes the earth is called God's footstool, Matthew 5:35 ; Isaiah 66:1 ; sometimes Jerusalem; sometimes the temple, Lamentations 2:1 ; sometimes the tabernacle, Psalm 32:7 ; and sometimes the ark, 1 Chronicles 28:2 . The Israelites, when they worshipped, turned their faces toward the ark, because that was the place where was the symbol of the Divine Presence.

For he is holy - The burden chanted by the chorus.