“And without controversy, great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen by angels, preached to the Gentiles, believed on in the world, received up into glory.” Webster’s Translation
Since there are variant early Greek manuscripts of 1 Timothy 3:16, most modern versions have translated 1 Timothy 3:16 as “He was manifested in the flesh” rather than “God was manifested in the flesh.” Even if we go with the translation, "He was manifested in the flesh" in 1 Timothy 3:16, the Unitarian Socinian view is still untenable. For who is the "HE" who pre-existed to manifest Himself in the flesh? Someone clearly had to exist as a “He” before “he was manifested in the flesh.”
1 Timothy 3:16 does not prove a Trinitarian God the Son was manifested in the flesh because no scripture ever says that the Son was manifested in the flesh.
Heb. 2:14 says, "Since the children have flesh and blood, HE too shared in their humanity" to be made “fully human in every way (Heb. 2:17 NIV).”
Who then is the HE who SHARED IN OUR HUMANITY to be made "fully human in every way" in Hebrews 2:14-17? Someone clearly had to exist as a “HE” before being made “fully human in every way.”
This is the precise meaning of John 8:57-59.
“57Then the Jews said to Him, “You are not yet fifty years old, and have you seen Abraham?” 58“Truly, truly, I tell you, Jesus declared, “before Abraham was born, I am!” 59At this, they picked up stones to throw at Him.”
When Jesus was asked, "You are not yet fifty years old, and have you SEEN ABRAHAM?" Jesus replied, "Before Abraham was born, I AM."
Jesus did not say, “Before Abraham was born, I was” as if he was created before Abraham. Jesus clearly said, “before Abraham was born, I am.” By saying, “I AM,” Jesus affirmed that he always pre-existed as the timeless God of Exodus 3:14. For if Jesus meant the same thing as saying, “I am Jesus the Messiah,” then why would the Jewish Pharisees have “picked up stones to throw at him?”
The Pharisees knew that Jesus had used “I AM” in the same manner that God the Father used “I AM” in Exodus 3:14. That is why they picked up stones to kill him.
“God said to Moses, ‘I AM WHO I AM. This is what you are to say to the Israelites: I AM has sent me to you.'" Exodus 3:14
Benson’s Bible Commentary gives an accurate and thorough rendering of Exodus 3:14,
“The Septuagint renders the words ειμι ο ων, I AM the existing Being, or HE WHO IS; and the Chaldee, I AM HE WHO IS, and WHO WILL BE. That is, I am He that enjoys an essential, independent, immutable, and necessary existence, He that IS, and WAS, and IS TO COME (Rev. 4:8).”
Revelation 4:8 records that the angels “… never stop saying: ‘Holy, Holy, Holy, is the Lord God Almighty, who WAS and IS and IS TO COME!’”
Benson’s Commentary further explains “I AM” in Exodus 3:14,
“It explains his name Jehovah, and signifies, 1st, That he is self- existent: he has his being of himself, and has no dependence on any other ... 2d, That he is eternal and unchangeable: the same yesterday, to-day, and forever. For the words are with equal propriety rendered, I WILL BE WHAT I AM, or, I AM WHAT I WILL BE, or, I WILL BE WHAT I WILL BE.”
God told Moses to say to the Israelites, “I AM that I AM” and “I AM has sent me to you.” This extraordinary use of “I AM” with “has sent me to you” implies a timeless existence. This is the equivalent of Jesus saying, “Before Abraham was born I AM” in John 8:58. For Jesus is the timeless great “I AM” of Abraham, Moses, and the prophets.
“I AM” in Greek is “ego eimi.” Just as the English words “I AM” can be used for individual people, so the Greek New Testament uses “ego eimi” for people saying “I AM” in the normal context of those words.
For example, John 18:4-6 says,
“4Jesus, knowing all that was coming upon Him, stepped forward and asked them, “Who are you looking for?” 5“Jesus of Nazareth,” they answered. Jesus said, “I am (ego eimi).” And Judas His betrayer was standing there with them. 6When Jesus said, “I am,” they drew back and fell to the ground.…”
Even though Jesus said, “I AM” in the normative context of being the man who was raised in Nazareth, the soldiers “fell to the ground.”
However, John 8:58 proves that Jesus did not use “ego eimi” in the normative context of a created human being. He used these words in the same context that God used in Exodus 3:14, “I AM that I AM … I AM has sent me to you.”
Jesus never responded by saying that he did not see Abraham. Jesus’ response proves that he not only pre-existed to SEE ABRAHAM, he also pre-exited as the great "I AM" of eternity past (Exodus 3:14).
This is why Heb. 1:8-10 proves that Jesus is the One who created the heavens and the earth as Yahweh God the Father before becoming a human son (see Heb. 1:10, Psalm 102:25, Heb. 3:3-4).
8But of the Son he says, "Your throne, O God, is forever and ever. The scepter of uprightness is the scepter of your Kingdom.
9You have loved righteousness, and hated iniquity; therefore God, your God, has anointed you with the oil of gladness above your fellows."
Hebrews 1:8-9 is a direct quote Psalm 45:6-7 which is a Messianic prophecy informing us that the Messiah will ascend to “the throne of David” which inspired scripture calls “the throne of God” in Rev. 22:3 and “the throne of Yahweh” in 1 Chronicles 29:23. Verse nine proves that “the man Christ Jesus” who is anointed by his God will ascend to “the throne of David” when he returns to sit on “the throne of his glory.”
10And, "You, Lord, in the beginning, laid the foundation of the earth. The heavens are the works of your hands.”
Verse ten addresses the Son as the One who created all things as Yahweh God before he became the “child born” and “son given.”
Hebrews 3:2-4 proves that “Christ Jesus” created all things as God before becoming a son, “… Christ Jesus, 2 who was faithful to Him who appointed Him, as Moses also was faithful in all His house. 3 For this one (Christ Jesus) has been counted worthy of more glory than Moses, inasmuch as He who built the house has more honor than the house. 4 For every house is built by someone, but He who built all things is God.”
Christ Jesus has more glory than Moses as the builder (creator) of the house while Moses is only a part of the creation. Therefore, Christ Jesus is counted worthy of more glory than Moses in building all things as God. Thus proving that Jesus had to pre-exist to create all things as Yahweh God before becoming a human son.