It may take a little while. Just unfocus your eyes a little and like a 3D image on a 2-dimensional surface, a certain holographic image will begin to appear.
(I've spent many years pondering such things).
To see if I can help lay the basic understanding here. Yes, Jesus as a flesh and blood human like anyone of us is not "God", if for no other reason the finite is not infinite. But when I speak of Christ, or specifically which I prefer, Logos, that is not flesh and blood and finite. That is Infinite. So when I speak of eternal in Jesus, that is God. Jesus is both fully human, and fully divine. Are you with that distinction so far?
That Eternal "part" of Jesus is not separate from God. It's not a created anything. It is God manifesting. Think of it in this way. God is the Source of all creation. God itself is not a creation, nor created. It is without form. It is the Formless through which all form arises and manifests. It comes forth from God, from the Formless into form. With this so far? I very much encourage to you process that a little to try to see the picture before you assume anything.
So this Formlessness, this Source which is, for lack of any real ability to speak of it is the Ground 'potential' the unformed. Nothing that is, nothing that exists in form came into being outside of arising from this Source Ground. Now, here it comes. As this Source manifests, creates, this "movement", this "force" (no words capture this), this "activity" is Logos. Logos is God both God manifesting, and being manifested. Two parts here, "manifesting" and "manifested". The Manifesting, is the Manifestation of God. That Manifesting and the manifested is God, seen and known in
form. Logos is the form of God. (If you say you understand at this point, I'd question that.
).
So now, when you speak of the attributes of God, "Infinite Love, Grace, Power," etc, those are all manifestations of Source. Those ARE Logos. Logos doesn't "have those", or share in those, or possess those, those ARE Logos itself. When you speak of God's Love, that is Logos. It is not separate from God, but a pure, expression of the Infinite Formless Ocean out of which it arises Infinitely! That, is Logos.
So when John says Logos became flesh...... What this saying is that God's Love become human. But he was human. That Expressing and Expression of God clothed itself in human form and "dwelt among us", as John says. The form of a human of course could bleed and die, but the Eternal cannot for it is ever-manifesting from God into the whole of creation, moment to moment without change. Everything changes that is manifested, but the Manifestor does not.
Ok, I'll pause here. And honestly, that will take some serious processing to begin to apprehend. As I said, try unfocusing your eyes a little and try to let the image emerge here.
I'll address the rest later.