Albert Barnes Commentary Psalms 145:13

"Thy kingdom is an everlasting kingdom, And thy dominion [endureth] throughout all generations." — Psalms 145:13 (ASV)

Thy kingdom is an everlasting kingdom ... - See Psalms 10:16, note; Daniel 4:34, note. The meaning is, that the reign of God will continue forever and ever. It will never pass away as other dominions do; it will not change as dynasties do among people; it will not be overthrown as they are; its great principles will stand firm forever and ever. Compare the notes at Psalms 72:17.