Joseph Benson's Commentary of the Old and New Testaments - Psalms 102:25
Psalms 102:25. Of old hast thou laid the foundation of the earth The eternity of God looks both backward and forward: it is both without beginning and without end. The latter is affirmed and illustrated Psalms 102:24; Psalms 102:26-27, the former is implied in this verse. Thou hadst a being before the creation of the world, when there was nothing but eternity, but the earth and heaven had a beginning given them by thy almighty power. read more
Albert Barnes' Notes on the Whole Bible - Psalms 102:25-27
Of old - See this passage fully explained in the notes at Hebrews 1:10-12. In the beginning; at the first. The phrase used here means literally “to the face;” then, “before” in the order of time. It means here, long ago; of olden time; at the beginning. The meaning is, that the years of God had stretched through all the generations of people, and all the changes which had occurred upon the earth; that at the very beginning he existed, and that he would continue to exist to the very close,... read more