It is one of the reasons I suggested some study. I learned about it in a Protestant Seminary, not in RCIA. If you knew more basic things about bible history, perhaps your mind would be more open, and you would not have to argue ridiculous things. That way, you could focus your arguements on what actually exists, instead of things you made up, because you don’t know any better.
Matthew has a great deal of internal evidence that it was written in ARamaic, as well as historical evidence, if you know what you are looking for, and are open minded. I am sure you would be more open minded to learn about this from a fellow anti-Catholic, would you not?
In any case, you will have no credibility at all on this issue until you can accept the internal testimony of the scriptures themselves. It has been shown to you that these children that are called “his brothers and…sisters here with us” belong to different parents. Unless and until you can “see” this in your bible, there is not much use trying to go further.