Psalms 90:2 - Clarke's commentary and critical notes on the Bible

Before the mountains were brought forth, or ever thou hadst formed the earth and the world, even from everlasting to everlasting, thou art God. Before the mountains were brought forth - The mountains and hills appear to have been everlasting; but as they were brought forth out of the womb of eternity, there was a time when they were not: but Thou hast been ab aeternitate a parte ante, ad aeternitatem a parte post; fram the eternity that is past, before time began; to the eternity that is after, when time shall have an end. This is the highest description of the eternity of God to which human language can reach.