Peace....
Wael, "Son" in Matthew 3:17 is the Greek word Uihos and means just that, the male offspring. The word Uihos does not mean servant. Since the definition you provided is incorrect, the following premise you attempted to connect to son meaning servant is also incorrect.
You say it is blasphemy to say Jesus Christ is the only begotten Son of God, we Christians, according to the Bible, say it is blasphemy to say he is not. Jesus Christ refers to himself in relation to the Father in this manner.
John 3:16
(16) <b>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.</b>
Thus further proving my point about two different deities.
This is the crux of the issue between Muslims and Christians. Muslims cannot get beyond their natural minds to understand why "begotten" is used to describe Jesus Christ's relationship to the Father. Begotten in Greek does not mean "to have sexual intercourse and produce" as you seem to believe Wael. Begotten in Greek is the term Monogenes and means: Single, of its kind, only.
The word begat Wael, in Matthew the first chapter is the Greek word Gennao and means: Of men who fathered children. So while that word implies physical sexual intercourse, the word Monogenes, in reference to Jesus Christ, does not.
Jesus Christ is single, of his kind because he was born of the Holy Spirit and not from physical sexual intercourse.
As far as Israel is concerned, both as a man (Jacob) and a nation; Israel is called "son" to show the personal relationship between YHVH and that people (Exodus 6:7). You will also notice Wael, in the two verses you provided Exodus 4:22 & 23 that the Hebrew words for "son" and "serve" are totally different. Son is the Hebrew word Bên and Serve is the Hebrew word ‛âbad, just like the website you quote states. Showing and proving that even in the Old Testament, son does not mean servant.
One last question Wael, you said:
"Can you show me a SINGLE verse in the entire New Testament where JEHOVAH’S name is mentioned?"
LOL, actually I can...now pay attention.
Matthew 1:21
(21) <b>She will bear a son, and you shall call his name Jesus, for he will save his people from their sins."</b>
Jesus name in Hebrew is Yeshua which means "JEHOVAH'S Salvation". So every time you see Jesus in the New Testament, you're seeing Jehovah's Salvation.
-smile-