Eternality means that God is not limited by time. He has no beginning or end. Since God is without beginning or end, He is infinite.
- Even from everlasting to everlasting, You are God. - Psalm 90:2b
“From everlasting to everlasting, Thou art God” demonstrates that there is no distinction in time for God. The past, present, and future are an equally current reality to Him.
God not only existed before time; He existed before space.
- Just as He chose us in Him before the foundation of the world, that we would be holy and blameless before Him. - Ephesians 1:4
The “foundations of the world” relate to the method of the universe's conception. Before the universe was conceived, God chose to make believers holy and blameless.
Furthermore, God existed before all of matter.
- Before the mountains were born Or You gave birth to the earth and the world, Even from everlasting to everlasting, You are God. - Psalm 90:2a
The phrase “before the mountains were brought forth” is a Hebrew mechanism for expressing the idea of “before the earth was born.” In other words, before the earth (i.e., matter) came into existence, God was. God’s eternality means that He exists before time, space, and matter. As well, He is not dependent upon time, space, or matter; rather, God is beyond time, space, and matter.