Since Jesus as the firstborn of all creation is a created person, he cannot be Almighty God. The Scriptures repeatedly portray him as in a position subordinate to God. For example, concerning the resurrected Jesus Christ, the apostle Paul wrote: “I want you to understand that the head of every man is Christ, the head of a woman is her husband, and the head of Christ is God.” (1 Cor. 11:3, CB) When giving the inspired “Revelation” to the apostle John, Jesus said concerning himself: “He who conquers, I will make him a pillar in the temple of my God; never shall he go out of it, and I will write on him the name of my God, and the name of the city of my God, the new Jerusalem which comes down from my God out of heaven, and my own new name.” (Rev. 3:12, CB) Did you note that four times in this verse alone Jesus refers to his Father, Jehovah, as “my God”?—Compare Philippians 2:5, 6, CB.
In no way is this meant to deny the exalted position that Jesus occupies next to God. Before ascending to heaven, Jesus said to his disciples: “All authority in heaven and on earth has been given to me.” (Matt. 28:18, CB) It was appropriate for God to ‘give’ to his Son such authority, since the Son was the firstborn of all creatures. Right in line with primogenitureship, the apostle Paul could write concerning Jesus: “[God] raised him from the dead and made him sit at his right hand in the heavenly places, far above all rule and authority and power and dominion, and above every name that is named, not only in this age but also in that which is to come; and he has put all things under his feet and has made him the head over all things for the church.”—Eph. 1:20-23, CB.