'Footstool' in the Bible

or by the earth, for it is the footstool of His feet; or by Jerusalem, for it is the city of the Great King.

David himself said [when inspired] by the Holy Spirit,‘The Lord (the Father) said to my Lord (the Son, the Messiah),“Sit at My right hand,Until I put Your enemies under Your feet.”’

Until I make Your enemies a footstool for Your feet.”’

Until I make Your enemies a footstool for Your feet.”’

‘Heaven is My throne,And the earth is the footstool for My feet;What kind of house will you build for Me?’ says the Lord,‘Or what place is there for My rest?