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.
You have ONE verse which is being misunderstood while I understand that verse plus have MANY verses showing God has been seen:
Clarke:
It is likely that the word seen, here, is put for known, as in Joh_3:32; 1Jo_3:2, 1Jo_3:6, and 3Jo_1:11; and this sense the latter clause of the verse seems to require: - No man, how highly soever favored,
hath fully known God, at any time, in any nation or age; the only begotten Son
Many people have seen God:
Gen 32:24 And Jacob was left alone; and there
wrestled a man with him until the breaking of the day.
Gen 32:25 And when he saw that he prevailed not against him,
he touched the hollow of his thigh; and the hollow of Jacob's thigh was out of joint, as he wrestled with him.
Gen 32:26 And he said, Let me go, for the day breaketh. And he said, I will not let thee go, except thou bless me.
Gen 32:27 And he said unto him, What is thy name? And he said, Jacob.
Gen 32:28 And he said, Thy name shall be called no more Jacob, but Israel: for as a prince hast thou power with God and with men, and hast prevailed.
Gen 32:29 And Jacob asked him, and said, Tell me, I pray thee, thy name. And he said, Wherefore is it that thou dost ask after my name? And he blessed him there.
Gen 32:30 And Jacob called the name of the place Peniel: for
I have seen God face to face, and
my life is preserved.
Here Jacob not only wrestles with God physically, he also was allowed to see His face and live.
1 Kings 22:19 And he said, Hear thou therefore the word of the LORD:
I saw the LORD sitting on his throne, and all the host of heaven standing by him on his right hand and on his left.
Here he did see God on the throne.
Exo 33:20 And he said, Thou canst not see
my face: for there shall no man see me, and live.
Exo 33:21 And the LORD said, Behold, there is a place by me, and thou shalt stand upon a rock:
Exo 33:22 And it shall come to pass, while my glory passeth by, that I will put thee in a clift of the rock, and will cover thee with
my hand while I pass by:
Exo 33:23 And I will take away
mine hand, and
thou shalt see my
back parts: but
my face shall not be seen.
Here we see that he does have a face, has a hand, and has "back parts" of a body. Moses was not allowed to see his face, but he saw his hand and saw his "back parts".
Exo 24:9 Then went up Moses, and Aaron, Nadab, and Abihu, and seventy of the elders of Israel:
Exo 24:10 And
they saw the God of Israel: and there was under
his feet as it were a paved work of a sapphire stone, and as it were the body of heaven in his clearness.
Exo 24:11 And upon the nobles of the children of Israel he laid not his hand: also
they saw God, and did eat and drink.
Isa 6:5 And I said: “Woe is me! For I am lost; for I am a man of unclean lips, and I dwell in the midst of a people of unclean lips; for
my eyes have seen the King, the LORD of hosts!”