'His Footstool' in the Bible

Exalt Yahweh our God, and worship at his footstool. He [is] holy.

Let us go to his dwelling places; Let us worship at his footstool.

How, {in his anger}, the Lord has covered the daughter of Zion in a cloud! He has thrown down from heavens [to] earth the splendor of Israel, and he has not remembered his footstool in the day of {his anger}.