Psalms 89:11

The heavens are thine, the earth also is thine: as for the world and the fulness thereof, thou hast founded them.

The heavens are God's own, and the earth is His also, while the world and its fullness in every part belong to Him because He founded them. He is thus Creator and sovereign Lord, holding rightful ownership and rule over all. His power to create and His power to govern give confidence in His strength and in His care for His people.