That is a very weak argument. Obviously, God had appeared in the form of a man before Jesus came. There is more to John 1:18 than meets the eye. My own opinion is that no man sees God in all of His glory and lives. I think there are Scriptures to support that view. Regardless, there is no denying that God appeared in the form of a man to Abraham, Joshua.
Gen. 18:1. YHWH appeared to Abraham. He came in the form of a man.
Ex. 33:11. YHWH spoke to Moses face to face.
Josh. 5:13 Joshua saw the face of God.
Where are you coming up with a beginning before the beginning?
Gen 1:1 clearly says, In the beginning GOD created the heavens and the earth. We're told Jesus created everything. Col. 1:16, John 1:3, Heb 1:1-2, 8-10
Jesus Christ is God. He made the heavens and the earth. This can mean only one thing. God is Jesus and Jesus is God who made everything!
God or "US" at Genesis 1:26 ? Who is the one to whom God is speaking ?
Yes, ' in ' the beginning. Who was before the beginning according to Psalm 90:2 ?
Isn't Jesus the just the ' image ' (reflection) of God according to Col. 1:14 ?
Is God the firstborn of every creation, or is God from everlasting - never born first or otherwise?
Col. 1:18 is God firstborn from the dead, when God can Not die - Psalm 90 v 2 ?
Who resurrected the dead Jesus according to Acts 2:27,31,32; 3:15; 13: 30,37 ?
Sure Moses knew God face to face - Deut. 34:10-12 - but that does Not necessarily mean see God literally but rather in a close relationship. God spoke or talked to Moses as closely knowing a person face to face.
Besides Exodus 33: 11,20 see Numbers 12:6-8; Deut. 5:4 where there was verbal talking used in communication with God by not literally in front of or by God's face.
Why does Exodus 33:20 say Moses could Not see God's face and live ? Isn't that because special precautions had to be taken to protect Moses from harm at Ex. 33: 21-23 ?
Where does it say at Joshua 5 vs 13-15 Joshua saw God face to face, or saw the face of God?