Did Jesus need the virgin birth to be sinless? No, he was already sinless as the eternal Son of God before His birth. In Luke 1:32 he is called the Son of the most high. v.35 he is called "that Holy one", "the Son of God". He is also called in Mt.1:23 "Emmanuel", all these titles are of God himself who is without sin. Heb. 4:15 tells us "he was at all points tempted as we are, yet without sin." 2 Cor. 5:21, " For he made him who had no sin to be sin for us;" (also 1 Pt.2:22, and 1 Jn. 3:5.) This is the reason that God became man- to be a sacrifice for all mankind's sin.
This is why there was the necessity for a virgin birth. We find that the sin nature is passed on specifically through the male. Rom. 5:12 tells us sin entered the world through one man and that everyone is given a built in death warrant because of their sin nature.
What was necessary is that God enter the world like anyone else so that He could be a genuine human. If he was born of both a human Father and mother there could have been no authentic claim to be deity, he would be no different than any of us. On the other hand if he had come with no relation to human parentage then he could not claim to be a genuine human. The perfect solution worked out from before the foundation of the world and prophesied in Gen.3:15 the seed of the woman, a virgin birth.
This was the miraculous conception without a man, having no human Father. This would be a sign of a super-natural means of bringing Immanuel into the world. Isa.7:14: “Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call His name, (Immanuel) God with us.”
Did Mary need to be a perpetual virgin to have Jesus' birth be sinless?
Roman Catholics believe for sinlessness to occur in Jesus they claim Mary was of necessity made sinless, for this reason Mary is given want they call the immaculate conception, she conceived without sin. Biblically for Mary to be without sin, then her parents needed to be without sin and then their parents and so on down the line. God did not intervene in the human genealogy except when he himself became man. Mary was not picked because she was made perpetual virgin before hand but because of God’s grace. His sinlessness was not dependent on Mary's purity, she didn’t need to be preserved from sin to make Jesus sinless. Biblically the sin nature is passed on through the man, it lies within the heart of man, in his very soul, the nature of our being. This is why it was not passed on to Jesus he had no human Father. This is why there was need of a virgin birth. The human body is not sinful, but can be used for sin as its base nature dictates what is already in ones heart. The Bible teaches that sin is present at conception as David the Psalmist stated "in sin did my mother conceive me." Also in Job 14:4 " No one can make something clean out of something unclean." So Jesus was placed into the womb of Mary without the normal means of conception. It was His human nature that needed to be conceived since He already existed as deity. The virgin birth became the means to protect the sinless son of God as He became human. In Luke 1:35: And the angel answered and said unto her, "The Holy Spirit shall come upon you, and the power of the Highest shall overshadow you: therefore also that holy one which is to be born will be called the Son of God." The Holy Spirit then protected His human nature as it developed. In Mt.1:20 The angel tells Joseph "that which is conceived of the Holy Spirit. The egg was generated to life by the Holy Spirit as God the Son- who already existed entered the egg under the superintending ministry of the Holy Spirit.He is the only human being born like this. From the time of the conception to his actual birth Mary's womb was under the protection and sanctification of the Holy Spirit.
It is the male seed where the sin nature is passed on. By having the virgin birth, this bypassed the natural process to insure no sin nature was transferred to the female chromosome. The female ovum itself has no blood, neither the male sperm; but it is when these come together in the fallopian tube that conception takes place, the blood is made and a new life begins. The blood type of the Son of God was a separate and precious type unlike any other, it had no sin. Because of this method of conception, it is not possible that Mary could have supplied any of her Adamic blood for Jesus who was to be the spotless lamb of God.
Thoughts on this?