Why in the dozens of Scriptural discussions regarding the unity...

Why in the dozens of Scriptural discussions regarding the unity of Jesus with God His Father is the Holy Spirit of God NOT included?

If all three are EQUALLY CO-EQUAL, why does Jesus Christ HAVE A GOD, yet the Father is NEVER SAID TO HAVE a God?

Jesus said He didn't need to "rob" God to be equal with Him. Why? Because the Father freely GAVE Jesus all that He had and possessed. Jesus had ALL power and ALL authority and ALL judgment in heaven and earth. Were these things the natural possessions of Jesus seeing that He is supposedly a third equal part of this trinity? No, God GAVE Jesus all these things--they had an origin and the origin is GOD THE FATHER.

Jesus Christ will be SUBJECT to God His Father for all eternity (See I Cor. 15:24-28). Where are we told that the Father will be subject to Jesus Christ for all eternity? And, of course, the Holy Spirit is not even mentioned in this discussion in I Cor. 15.

If the trinity is true, how is it that Jesus Christ was CONCEIVED BY THE HOLY SPIRIT, but is the SON OF GOD THE FATHER?