Begotten not made?

John ch.1:18LSB"No one has seen God at any time; the only begotten God who is in the bosom of the Father, He has explained Him."

John ch.1:18NWT Study Edition"No man has seen God at any time;+ the only-begotten god+ who is at the Father’s side+ is the one who has explained Him.+"

John ch.6:57LSB"As the living Father sent Me, and I live because of the Father, so he who eats Me, he also will live because of Me." 

If the first cause argument is to retain coherence the most high God MUST be unbegotten/self-sustaining. As to what is meant by JEHOVAH'S Begetting of his unique son ,Jesus helps us by using his resurrection of those who faithfully follow him up to their deaths as an analog. Thus JEHOVAH does not merely sustain his Logos he caused his origin.

Birth language as applied to JEHOVAH in scripture always refers to creation/recreation 

Psalm ch.90:1,2LSB"Lord, You have been our dwelling place from generation to generation.

2Before the mountains were bor

Or You brought forth the earth and the world

Even from everlasting to everlasting, You are God.",

Note the birth language used to describe JEHOVAH'S very temporal Creating of the planet.

What about the Begetting of the unique Son of the God.

Acts ch.13:33LSB"that God has fulfilled this promise to our children in that He raised up Jesus, as it is also written in the second Psalm, ‘You are My Son; today I have begotten You.’"

Thus the very temporal resurrection of the son is called a Begetting of him, and to be clear the resurrection is a creative act by JEHOVAH.

Psalm ch.104:29,30LSB"You hide Your face, they are dismayed;

You take away their spirit, they breathe their last

And return to their dust.

You send forth Your Spirit, they are created;

And You renew the face of the ground."

If our Lord's Begetting in time via re-creation does not invalidate his sonship the neither should his Begetting in time via creation.

Colossians ch.1:15KJV"Who is the image of the invisible God, the firstborn of every creature: "