Jesus had a beginning- the Light created on day one was not physical- "Day 4 sun, moon, and stars galore." The Father always comes before the Son- that's what Father means. Like Colossians 1 says, All the fullness of the Father is in the Son. This is because He had no spiritual mother, so unlike us who are physically of our biological father and mother, Jesus is completely of the Father. Some may view this as cloning, but God the Father, God the Son, and God the Holy Spirit are three beings of the same mind and purpose. Matter of fact, as Christ's church, we are also to be all of the same mind and purpose, but we definitely are individuals.
Jesus is before us, after He was created He then created all things- like Colossians says, nothing was made without Jesus that had been made- that means Day 1s light was not a thing. Our purpose starts and ends with Him. In speaking of Jesus Colossians says, "All things were made by Him and for Him. He is the Beginning, but His End has no end. It just means He is everything to us.