Jesus always was God (
John 1:1-3;
Col. 1:16-17). Since the Bible teaches that Jesus is God (
John 10:30;
20:28;
Heb. 1:8) and God is eternal (
Psalm 90:2), then Jesus must have always been God.
John 1:1-3: “In the beginning was the Word, and the Word was with God, and the Word was God. 2The same was in the beginning with God. 3All things were made by him; and without him was not any thing made that was made.”
Colossians 1:16-17: “For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him: 17 And he is before all things, and by him all things consist.”