Man's soul is created in God's image.
Since no one can see God (John 1:18) ? God must use a means to make Himself knowable to us.
God's genius utilizes the humanity of Christ to manifest all we can possibly know about God,
by manifesting God in a way we have the capacity to relate to and understand as humans.
That is why a Greek word that means "exegesis" is used in John 1:18.
Its to tell us that Jesus is God's means to exegete God for man's understanding.
The Amplified Bible even translated John 1:18 with that factor of exegesis in mind.
Here is a typical translation.
It is lacking in the depth needed to convey exegesis.
New International Version
No one has ever seen God, but the one and only Son, who is himself God
and is in closest relationship with the Father, has made him known.
And here is what the Amplified Bible provides to give us closer understanding to what is intended in the Greek.
No man has ever seen God at any time; the only unique Son, or the only begotten
God, Who is in the bosom [in the intimate presence] of the Father, He has declared Him
[He has revealed Him and brought Him out where He can be seen; He has interpreted Him
and He has made Him known]. John 1:18 Amplified Bible, Classic Edition
That is why Jesus made it known to his disciples....
Jesus said to him, “Have I been with you so long, and you still do not know me, Philip?
Whoever has seen me has seen the Father. How can you say, ‘Show us the Father’?
John 14:9
Since God when unfiltered and interpreted would be incomprehensible to man?
God has His Son (humanity and God in union) to exegete what he knows, and we can not understand.
Unless it is demonstrated and explained to us in a manner that we as humans are being able to grasp.
In other words? If Jesus is not God? He is all the God we can know! That is why He is the Word. For we use words to comprehend
reality. God simply knows all things. God does not really need to speak within the Trinity. The Trinity is always knowing all things without need for explanation.