The scriptures are not difficult to grasp as to Who Jesus is. He was Word of God made flesh, sent to do His will. He came in the likeness of sinful flesh. He had to do this in order to condemn sin in the flesh. He came in a created flesh body, and yet He knew no sin.
Romans 8:3
[3]For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh:
2 Corinthians 5:21
[21]For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.
In whom? In Christ.
Below, we further see where it was told to Joseph the nature of the son who would be brought forth.
Matthew 1:20-23
[20]But while he thought on these things, behold, the angel of the Lord appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost.
[21]And she shall bring forth a son, and thou shalt call his name JESUS: for he shall save his people from their sins.
[22]Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying,
[23]Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.
JESUS.... Savior.
Emmanuel... God with us. We can plainly understand by this that Jesus was/is God.
Conceived by the Holy Spirit (who is the Spirit of God). And no, this was not a sexual encounter. God is Creator. He can create a body in the womb of a virgin! And He did exactly that.