"After the birth of our Lord, although the Gospels do not give us many details of His childhood, no mention is made of Mary and Joseph ever having other children. Never does it refer to the "sons of Mary" or "a son of Mary," but only the son of Mary.
This point is again corroborated at the crucifixion scene: Before He dies, our Lord says to Mary, "Woman, there is your son," and then to St. John, who is definitely not a blood brother, "There is your mother."
http://www.catholiceducation.org/articles/religion/re0090.html
2) That Mary herself was conceived of an immaculate conception. Sheer nonsense. There is no mention of this in the Bible.
"Proof from reason"
"There is an incongruity in the supposition that the flesh, from which the flesh of the Son of God was to be formed, should ever have belonged to one who was the slave of that arch-enemy, whose power He came on earth to destroy. Hence the axiom of Pseudo-Anselmus (Eadmer) developed by Duns Scotus, Decuit, potuit, ergo fecit, it was becoming that the Mother of the Redeemer should have been free from the power of sin and from the first moment of her existence; God could give her this privilege, therefore He gave it to her. Again it is remarked that a peculiar privilege was granted to the prophet Jeremiah and to St. John the Baptist. They were sanctified in their mother's womb, because by their preaching they had a special share in the work of preparing the way for Christ. Consequently some much higher prerogative is due to Mary. (A treatise of P. Marchant, claiming for St. Joseph also the privilege of St. John, was placed on the Index in 1833.) Scotus says that "the perfect Mediator must, in some one case, have done the work of mediation most perfectly, which would not be unless there was some one person at least, in whose regard the wrath of God was anticipated and not merely appeased."
http://www.newadvent.org/cathen/07674d.htm
That mandatory clerical celibacy is something advocated in the Bible.
The Lord's perfect example is sufficient.
OK. Try reading Mark 6:3
“Is not this (Jesus) the carpenter, the son of Mary and brother of James and Joses and Judas and Simon? And are not his sisters here with us? And they took offense at him.”
As for your second point, someone concocted that gobbledygook. The ONLY Immaculate conception mentioned in the Bible is that of Jesus, not His mother.
As far as your third point Jesus never said that you had to be celibate in order to become a priest. No where in the Bible is there such a mandate. The Church implemented mandatory celibacy in the Middle Ages as a response to rampant corruption, nepotism, and simony.
So....PLEASE....let’s stick to the FACTS and not make up a lot of nonsense out of whole cloth.
Many ancient religions, such as the ancient Roman, Greek, and Egyptian religions were based largely on myths, legends, and fables. The Judeo-Christian tradition is based upon HISTORY-—real people who lived in a real time period, and did real things. Let’s not make up a lot of nonsense which simply isn’t true.
I first learned that Jesus had brothers and sisters in a Bible Study class taught by a CATHOLIC priest. I am thankful to this day that he taught the Bible as it is written and did not make up things which simply aren’t there.