Thy faithfulness [is] unto all generations,.... Or "to generation and generation" ; to his people in every age, fulfilling his word, supplying their wants, giving them new mercies every morning and every day; never leaving and forsaking them, according to his promise: his faithfulness never fails, it endures for ever, and is exceeding great and large indeed; see La 3:23;thou hast established the earth, and it abideth: laid the foundation of it so firm and sure, that it cannot be removed: and though one generation has passed after another, the earth abides where it was, and will do for ever; and as firm and stable, and never failing, is the faithfulness of God, which this is designed to illustrate.
So some supply it, "as thou hast established the earth", &c. ; see Ps 24:2. rdw rdl "in generationem et generationem", Gejerus; "in aetatem et aetatem", Cocceius.