Sure but it's arrogant to claim that all of these thinkers from ages past were actually doing that. I don't agree with any of them because I'm not religious but they had serious reasons for the views they held, and there were serious disagreements on matters of religion that caused serious debates with serious arguments put forward.

any counter-arguments that clearly show a contradiction and make “the christian faith is true” impossible to be a true statement

We're talking about the content of the Bible and its interpretation, not "counter-arguments that clearly show a contradiction." (And: modern religions are far to flexible to be subject to "clear contradictions". I'm sure you've heard the responses from religious people to your criticisms already - you find those response unsatisfactory, as do I, but they expose a way in which you misunderstood the fundamental character of the religion you were criticising. I can expand if necessary)

So when it comes to scripture like "I didn't come to change the law" and so on, there are any number of ways of interpreting the language non-literally in a way consistent with modern Christian practice. I'm not going to play devil's (God's?) advocate with you but dismissing such things completely and out of hand is ignorant. People with better understanding of Biblical languages than you or I have studied more of the Bible than you or I have and have had long-running arguments it. If you don't believe the fundamental principles then... just let them have it? Dispute them when they come up against obvious moral or scientific principles, or on their other statements, but claiming with zero argumentation that they don't do any real thinking is silly.

Cool, that's not what a Christian is. But that's ok! You learnt something today!