I can't get anyone to answer this honest question. All I get back is because the Bible says so. But there must be a reason for it. What is it? Here I will give you a reason why he had to be a man.
Romans says a man (Adam) caused sin to enter into the world, and also that a man would have to redeem it from sin. Romans 5:15 says “For if many died through one man’s trespass, much more have the grace of God and the free gift by the grace of that one man Jesus Christ abounded for many.” The Bible specifically says that a man must do it. The book of Corinthians makes the same point Romans does when it says “For since by a man came death, by a man also came the resurrection of the dead” (1 Corinthians 15:21).
Now it's your turn. Anyone?
It has to do with several things...
1) First anciently, men with visions preached, that which the listeners could not BELIEVE what they could not see.
2) Men with visions preached THINGS that would happen Before they happened....too long of a time span for men to wait to see happen what was foretold. (Scripture reveals numerous times...shall come to pass)
3) Men with visions preached THINGS that would happen Before they happened....God shortened a time span, so men could Hear and Then See that it would happen. (Num 11:23 now See if it shall come to pass)
4) whoop, whoop...happenings pre told, comes to pass...but, but, but, WE WANT TO SEE GOD!!
5) Gods response....You stubborn, stiffnecked people! You can not Believe being pre-told of what will happen, it does happen and YOU STILL DOUBT God exists?
6) Here ya go kids......I WILL SEND MY (Gods) Word to Earth.....and guess what...YOU WILL SEE Him, YOU WILL HEAR Him.....AND MOST OF YOU.....WILL STILL NOT BELIEVE!
7) So God WHO had been giving VISIONS to men, To teach other men ABOUT God....Switches gears.....And Sends His OWN WORD to EARTH to TEACH earthly MEN.
8) God purposes IN HIMSELF.... (Eph 1:9)
9) God Prepared a BODY for His Word....(Heb 10:5)
10) God Sent His Word forth out of His mouth in the Prepared body ...
(Isa 55:11)
11) Sent His Word (a holy thing) to where it would prosper. (Isa 55:11)
12) Where God Sent His Word was this world Earth. (Heb 10:5)
13) In the LIKENESS AS AN EARTHLY MAN, God Sent His Word to Earth, (TO the VIRGIN WOMB of an Earthly Faithful Jewish woman) WAS in the LIKENESS, fashion, shape, look AS an Earthly man and was SEEN by Earthly men.....
Looking LIKE an Earthly man... (Phil 2:7, Phil 2:8)
14) God FORETOLD (through Gods Faithful Holy Angel Servant) that HOLY THING (ie the Word of God) (Luke 1:35) would be delivered forth from the Virgin Womb of a Jewish Woman...and called Jesus (Matt 1:21) and He called himself the Son of man (Matt 16:13) and that He shall be called the Son of God. (Luke 1:35)
15) and 30 years later, He was called the Son of God.
WHY? WHY did Gods Word come forth out of Gods mouth, and God purpose in Himself, to be seen ON EARTH AS A HUMBLED SERVANT, in the LIKENESS AS A MAN?
1) First and foremost ANY EARTHLY MAN that could SEE God “as He is”, would instantly DIE, incinerate, Because of the Brightness of His Pure LIGHT.
2) Gods PEOPLE, the TRIBES were scattered, following After Gentiles way and gods.
3) Judah adjoined with the Tribe of Benjamin were the last standouts continuing to Follow their forefathers Beliefs in God and Laws and Traditions of God.
4) God had PROMISED to SAVE faithful men He called “His People” ISRAEL.
5) Men Converting IN Christ were and are Servants Spreading the Gospel of Jesus Christ......and incinerated man would not be able to Serve God and Preach!
THE WHY...was to seek and SAVE His People, TO FULFILL His PROMISE.
THE WHY...WAS ALSO to make way for GENTILES to hear, learn, that they might ALSO Believe and be grafted into and Become Gods People.
AND...DURING the end of days tribulation, SHALL BE A GREAT Revival, Of Masses of JEWS becoming IN BELIEF....that
Jesus IS the Christ, the Son of the Living God...
THEN SHALL Gods Promise BE FULFILLED to His People ISRAEL.
And thereafter Separation of Gods People and those Against God.
And thereafter Judgement and A NEW Heavens and NEW Earth WITH Gods People and God Himself as He is.