I realize science is the go to option for combating religious inconsistency, however, I would like to approacch this from my area of expertise, history.
See, historians require hard evidence in order to draw any form of meaningful conclusions, however, unlike scientists, historians have to make assumptions more often. This is mainly because historians have fewer resources at hand in order to prove something. That is not to say historians take things on faith, we simply have to make conclusions with what we have, this is especially true when dealing with ancient cultures.
for example, we know a lot about the Romans because they kept a great many records. We know very little about Britain from 400-600 AD (roughly) because those records either do not exist or were destroyed. What does this have to do with religion?
Well, the bible may be considered a historical document of sorts. The problem with the bible however is its age. Throughout the bible's history it has been revised, edited, translated, reconfigured and rewritten uncountable times. This represents a major problem when trying to determine anything from the bible. Especially when we compare the Old and New Testaments. See, historians can verify that the Old Testament is highly inacurate, with maybe one or two points of interest for those dealing with ancient cultures. How do we know this? Well, there;s no other supporting evidence. Also, the OT is basically Judaism. So historians safely can say the OT is inaccurate. The problem is the NT.
The New Testament provides historians with a major headache . See, historians cannot claim that Jesus wasn't real. That's not how these things work. See someone had to inspire people to write about these events. Muhamed was the trigger for Islam, so who was the trigger for Christianity? History shows that people record those who inspire changes in their societies and cultures. Well, the answer is: historians don't know. Historians have concluded basically 2 things for sure: 1) there was someone who preached 2) the bible was severely delayed in being written.
What brings us to this conclusion? Roman records. Romans were obsessive about their record keeping, and we haven't found anything indicating a preacher around Jesus's time. Though some historians suspect he may have preached 100-200 years before the time the bible states. Why? Well back then it took a lot for religious eal to spread, also Romans hated Christianity until the Empire officially adopted it, and even then...
So, overall my point is that religion doesn't have a leg to stand on. And this isn't science, this is simple historical analysis. My evidence comes from where your "evidence" comes from. The difference is that I have support for my claims.