Is the trinity written out word for word in the Bible? No. However, one can reason to it.
Is perpetual virginity written out in the Bible? No. However, one can reason to it.
However, to reason to it, one must understand several things. One would be the archtype of the new Eve. The second would be the role of virgins in ancient, specifically Jewish society. One would have to have a thorough understanding of Koine Greek. Finally, one would have to be able to synthesize all of that data.
As we look at the books of the Bible with our 21st century eyes, much of what seems clear really isn’t. However, when viewed from the lens of ancients, as well as the writings of scholars throughout the ages, such as St. Thomas Acquinas, St. Augustine, St. Polycarp (to name a few), we find that perpetual virginity has been an accepted teaching since the first century.
God didn’t want Adam to be alone, that’s right. However, Joseph wasn’t Adam, and Mary wasn’t Eve. Additionally, religious celibates were common, and were commended by Jesus Himself, “and there are those who choose to live like eunuchs for the sake of the kingdom of heaven. The one who can accept this should accept it.” (Matthew 19:12)
God wants us to be fruitful and multiply, in general. But that is not a commandment.
If you are struggling with these dogmas, it is worthwhile to speak with your pastor. I am sure he can walk you through these doubts.
I am not struggling with anything. I am adamantly opposed to rewriting history and rewriting the Bible to conform to certain dogmas, doctrines, and ideologies. I first learned that Jesus had brothers and sisters in a Bible study class taught by a Catholic priest in a Catholic church. When we were going over the passages mentioning Jesus’s brothers and sisters, the priest did not say...oh, there’s an error here, they really meant to say cousins...or here’s another whopper I’ve heard over the years, the brothers and sisters were Joseph’s children from a prior marriage. No, the priest did not put any spin on it all. He simply presented the Bible as it is written. Period. Something ALL Christians should do, regardless of religious denomination. Is that asking so much? To stay true to the Word of God without making things up, without speculation or manufacturing dogmas? Not ALL Catholics think the same way you do. Some of us actually do put the Word of God first. It is not necessary to make religion more complicated than it needs to be. Our primary source of knowledge about Mary, Joseph, and Jesus-—as well as Jesus’s brothers and sisters comes directly from the Gospels. Who came up with theory that Mary was always a virgin? It certainly is no where to be found in the Bible. And neither is there any requirement that priests must be celibate-—quite the contrary -—priests are specifically permitted to be married according to Scripture. No one has the right to rewrite the Bible or rewrite history IMHO.