He which is of God hath seen the Father. Your statement "We see the Father as he gives us the faith to make it possible to believe Him not seen" makes no sense at all. Jesus did not say the Father is invisible and cannot be seen, he said he that sees me hath seen the Father. I believe he is the image of the invisible God. Jesus is that unapproachable light and he came into the world but the world knew him not.
Take a look at this verse and see who brings us to the knowledge of the the Father.
1 John 5:20 And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.
God is not a man as us. He remains without mother or father beginning of Spirit life or end thereof and neither is there a fleshly mediator set between God not seen and man seen as a infallible umpire with the approval of both , called a daysman. when the Son of man was called master teacher he gave glory to the father unseen and said only God is good. Therefore reserving the Holy unseen place.
Yes he that see the work of the Son sees the father who gave it as food of the fathers invisible will.
John 4:33-35 King James Version (KJV) Therefore said the disciples one to another, Hath any man brought him ought to eat?
Jesus saith unto them, My meat is
to do the will of him that sent me, and to finish
his work.
The wrath of God is revealed against those who would substitute the Son of man, Jesus "seen the temporal", in the place of the father who remains invisible (a non creation).
For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse: Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened. Professing themselves to be wise, they became fools, And changed the glory of the uncorruptible God into an image made like to corruptible man, and to birds, and fourfooted beasts, and creeping things. Romans1:20-23
An image made like to corruptible man includes the Son of man, Jesus.
It would seem to apply to the verse you offered 1 John 5:20 And we know that the Son of God not seen not the Son of man seen is come, and hath given us an understanding of the father not seen ,
When we think of God we remove all images . God is not made in the likeness of man seen .