The Ebionites, who descended from Jesus original disciples did not think Jesus was God, Holy Bible.

see link
http://www.earlychristianwritings.com/text/gospelebionites.html
Excerpt:
Quote:
And on this account they say that Jesus was begotten of the seed of a man, and was chosen; and so by the choice of God he was called the Son of God from the Christ that came into him from above in the likeness of a dove. And they deny that he was begotten of God the Father, but say that he was created as one of the archangels, yet greater, and that he is Lord of the angels and of all things made by the Almighty, and that he came and taught, as the Gospel (so called) current among them contains, that, 'I came to destroy the sacrifices, and if ye cease not from sacrificing, the wrath of God will not cease from you'


But why did the early Christians saw Jesus as the son of a virgin? Because they knew there was a prophecy/curse by Jeremiah that said that one of Jesus ancestors could not will not rule nor his descendants.

see link from Irenaeus Book 3

http://www.earlychristianwritings.com/text/irenaeus-book3.html

Quote:
1. But again, those who assert that He was simply a mere man, begotten by Joseph, remaining in the bondage of the old disobedience, are in a state of death having been not as yet joined to the Word of God the Father, nor receiving liberty through the Son, as He does Himself declare: "If the Son shall make you free, ye shall be free indeed."357 But, being ignorant of Him who from the Virgin is Emmanuel, they are deprived of His gift, which is eternal life;358 and not receiving the incorruptible Word, they remain in mortal flesh, and are debtors to death, not obtaining the antidote of life.

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1. God, then, was made man, and the Lord did Himself save us, giving us the token of the Virgin. But not as some allege, among those now presuming to expound the Scripture, [thus: ] "Behold, a young woman shall conceive, and bring forth a son,"400 as Theodotion the Ephesian has interpreted, and Aquila of Pontus,401 both Jewish proselytes. The Ebionites, following these, assert that He was begotten by Joseph; thus destroying, as far as in them lies, such a marvellous dispensation of God, and setting aside the testimony of the prophets which proceeded from God.


Quote:
9. But besides, if indeed He had been the son of Joseph, He could not, according to Jeremiah, be either king or heir. For Joseph is shown to be the son of Joachim and Jechoniah, as also Matthew sets forth in his pedigree.423 But Jechoniah, and all his posterity, were disinherited from the kingdom; Jeremiah thus declaring, "As I live, saith the Lord, if Jechoniah the son of Joachim king of Judah had been made the signet of my right hand, I would pluck him thence, and deliver him into the hand of those seeking thy life."424 And again: "Jechoniah is dishonoured as a useless vessel, for he has been cast into a land which he knew not. Earth, hear the word of the Lord: Write this man a disinherited person; for none of his seed, sitting on the throne of David, shall prosper, or be a prince in Judah.

"425 And again, God speaks of Joachim his father: "Therefore thus saith the Lord concerning Joachim his father, king of Judea, There shall be from him none sitting upon the throne of David: and his dead body shall be cast out in the heat of day, and in the frost of night. And I will look upon him, and upon his sons, and will bring upon them, and upon the inhabitants of Jerusalem, upon the land of Judah, all the evils that I have pronounced against them.

"426 Those, therefore, who say that He was begotten of Joseph, and that they have hope in Him, do cause themselves to be disinherited from the kingdom, failing tinder the curse and rebuke directed against Jechoniah and his seed. Because for this reason have these things been spoken concerning Jechoniah, the [Holy] Spirit foreknowing the doctrines of the evil teachers; that they may learn that from his seed-that is, from Joseph-He was not to be born but that, according to the promise of God, from David's belly the King eternal is raised up, who sums up all things in Himself, and has gathered into Himself the ancient formation [of man].427



This man, Irinaeus ignores the fact that Jesus was never a King, thus fulfilling the prophecy of Jeremiah.

By trying to circumvent the fact that Jesus was under the curse of Jeremiah, they made Jesus the son of a Virgin[/u], thus perverting the original meaning of Isaiah 7:14 which is about King Hezekiah9/u]and saying that those of us who disagree with this are heretics.
Elpidio Gonzalez

The Man of Yahweh