I think we agree Nowhere does it say that they didn't have sex. So that means that we have to look at the context of Scripture regarding this matter, we have to know the history of Judaism and 1st century Christianity and use hermantics with proper translations to find the answer. A proper translation of "brothers and sisters" could also mean cousins. So,
once again, there is no definitive answer with 100% certainty that they were Mary's children. Back to square one for us old friend.
If your church is encouraging you to look for the answers yourself they are not looking out for your soul which is what The Church leaders are supposed to do. For you see we are to Obey those who rule us, and be submissive (Matthew 18:17),
for they watch out for your souls, as those who must give account. Your church leaders are to be pointing out these things to the brethren. When they do they will be a good servant of Christ Jesus, constantly nourished on the words of the faith and of the
sound doctrine which they have been following. Scripture contains some things that are hard to understand, which ignorant and unstable people distort to their own destruction. So who is distorting Scripture? Your men or mine?
Mary