Jesus Christ existed before He took on His body of flesh and participated in the work of creation.
1 Corinthians 8:6 reveals "By whom are all things and we by him."
Ephesians 3:9, "....Who created all things by Jesus Christ."
Colossians 1:16-17, "For by Him were all thing created, that are 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. And He is before things and by Him all things consist."