Jesus Christ's Birth Foretold (Isaiah 9:6)
In Isaiah chapter 9 says that the Son given by God would be the mighty God, the Everlasting Father, and the Prince of Peace, in the New Testament John speaks out very boldly and plainly in his first epistle. He says that anyone who does not believe that Jesus Christ has become a man is not of God, but is of the antichrist, and then he is prompted by evil, deceiving spirit. The Bible speaks of this and sometimes bluntly, in order to be fully understood.
In Me John 5:10 it says that such a person makes God a liar, because he does not believe the Gospel record that God gave of His Son. The record is quite clear. When Mary asked how this could happen because of she was virgin the angel replied in Luke 1:35, the Holy Spirit will come upon you, and the power of the most high will overshadow you, so the holy one to be born. Will be called the Son of God. He who does not believe that record makes God a liar. These are plain and blunt words in scripture because God’s whole plan of salvation is affected if the virgin birth was not a fact.