The children of thy servants shall continue - The descendants of those that serve and obey thee. This represents the confident expectation of the psalmist that, as God was unchangeable, all his promises toward his people would be fulfilled, even though the heavens and the earth should pass away. God was the same. His word would not fail. His promises were sure. Compare Matthew 5:18; Matthew 24:35. The word rendered “continue,” means to dwell, as in a habitation; then, to abide. It stands opposed to a wandering, nomadic life, and indicates permanency.
And their seed shall be established before thee - The word used here means properly to stand erect; then to set up, to erect, to place, to found, to make firm, as a city, Psalms 107:36; the earth, Psalms 24:2; the heavens, Proverbs 3:19. It means here that they would be firmly and permanently established: that is, the church of God would be permanent in the earth. It would not be like the generations of people that pass away. It would not be like the nomadic tribes of the desert that have no fixed habitation, and that wander from place to place. It would not be even like the heavens that might put on new forms, or wholly pass away: it would be as enduring and changeless as God himself; it would, in its proper form, endure forever. As God is eternal and unchangeable, so would the safety and welfare of his people be.