Psalm 90:2 - from everlasting to everlasting you are God.

Before the mountains were born or you brought forth the earth and the world, from everlasting to everlasting you are God.

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 born Or You gave birth to the earth and the world, Even from everlasting to everlasting, You are God.

Psalm 90:2

Commentary
God's nature is without beginning or end, free from all succession of time, and contains in itself the cause of time (cf. Ps. 102:27; Is. 41:4; 1 Cor. 2:7; Eph. 1:4; 1 Tim. 6:16; Rev. 1:8).

MacArthur, J. J. (1997, c1997). The MacArthur Study Bible (electronic ed.) (Ps 90:2). Nashville: Word Pub.

Compare and Contrast
Moses mentions the infinity of God by comparison, to give a point of reference to this psalm's main topic: life's brevity.

Spirit filled life study Bible. 1997, c1991 (electronic ed.). Nashville: Thomas Nelson.