You are the one closeminded. Why would it matter if God was once a man on an earth and became God of this universe? How does that interfere with your monotheist view of the God of this universe? I've never disagreed that God created the universe. You claim science has the answer to this. I disagree. And, there is nothing in the Bible that would change my mind nor concur with your opinion. But, we can discuss it as long as we are both adults. In which I'm doubting whether you are or not by your reactions. Seems more like a little child not getting a cookie.
I was once monotheist myself as a Jew. But, as I searched the scriptures, studied, meditated, prayed and listened to the answer from the Spirit, my heart and mind has been changed. There is but one Father God of all our Spirits. One of His first Spirit Sons, Jehovah was brought into His throne to be the God of this Earth, come down and atone for our sins and lead the way back through the resurrection of the body. Jehovah, Jesus Christ, after receiving his resurrected body, ascended back to the Throne of God to be Lord God of those who accept him and are given to him in the resurrection. "God" is a title, not a person. Thus, there are these two in the Godhead and both Gods. As you have seen Christ, you have seen the Father. They are one in purpose. Jesus does all things through the Father's authority. The Holy Ghost is also a member of this Godhead and has remained a Spirit only body Personage. Not one thing I have said is NOT in the Bible.