What does the Bible say about God's eternal existence?

The Bible emphasizes that God Himself has no beginning. As recorded in Deuteronomy 33:27, 'The eternal God is thy refuge, and underneath are the everlasting arms.' This encapsulates the idea that God is not bound by time; He existed before the creation of the world and will continue to exist eternally. Additionally, Psalm 90:2 affirms this truth by stating, 'Before the mountains were brought forth, or ever thou hadst formed the earth and the world, even from everlasting to everlasting, thou art God.' Thus, God's eternity is a core aspect of His nature that offers comfort to believers, reminding them of His unchanging character.