An example of several verses in question:
John 3:16 KJV
“For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.”
Now; the verse that tells us how to translate the “greek” text is:
Luke 1:35 “And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.”
We are told clearly as we can be told in the verse above that Jesus is not just a “son of God” as the angels were referred to in the Old Testament and as saints are in the New Testament. He was unique in that he was the ONLY one who received that title by virtue of earthly birth.
This refers to his incarnation so he could redeem us through his blood and death.
1 Timothy 2:5 “For there is one God, and one mediator between God and men, the man Christ Jesus”
Angels are sons of God by virtue of creation. Saints are sons and daughters of God by virtue of the new birth and adoption.
The gospel of John and the first epistle of John go make a point that Jesus had an earthly body of flesh. Heretics were denying that Jesus as the Son of God was begotten by human birth.
Before Christ’s incarnation he was the “Word” as stated in John 1:1. He was with God and was God which is a mystery to us mere mortals.
According to scripture, Jesus (as manifested as an earthly messiah) occurred on a “day”.
Psalm 2:7 “I will declare the decree: the Lord hath said unto me, Thou art my Son; this day have I begotten thee.”
In Hebrews 11:17, the scriptures state that Abraham offered up his only begotten son. Why is this, since he had two sons?
The next verse explains for us. 11:18 “Of whom it was said, That in Isaac shall thy seed be called:”. You see, it wasn’t just that Isaac was unique, the Lord stated that only Isaac was to be regarded as Abraham’s son. Only Isaac was to be his seed and thus referred to as Abraham’s “only begotten”. Unique? Yes but more than unique.
Also we have to remember that we interpret the term “begotten” primarily as the apostle John uses the term rather than the book of Hebrews. John’s purpose is to wed the truths of both the deity and flesh bound together. This is why the term “BEGOTTEN” should be left as it is in the KJV.
1 John 4:3 “And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God:…”