Exalt ye the LORD our God, and worship at his footstool; for he is holy. 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, Psalms 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.