Historically Reliable?

Since the New Testament is a document from ancient history that we have available to investigate, if we put it through the same rigorous textual criticism as other ancient texts, when our investigation is complete and we find there are historically probable events that are only satisfactorily explained by one of numerous tested hypotheses, should we then trust that one hypothesis to be historically reliable (in so far as can be expected from ancient documentation)?

What do you think?

MJ