Even the resurrection of Lazarus was not “proof” enough for the truly hard hearted so being able to convince all is not a reasonable goal. And indeed, it was the teachable and sheep like that Jesus sought out and responded to his message. To the rest, shake the dust off our feet.
So to me proving this or that is not a high priority, I'll present the evidence as best I can and if any feel it's not sufficient “proof” then so be it. All anyone can really do is scatter seeds.
Well, we agree! Some things you can try to prove, but ultimately the other person is either going to accept it or not. I feel the same way as you about proving that the words of the Bible were inspired by God. Likewise, He also gave teaching authority to the Catholic Church to select the inspired books of the canon and to teach Sacred Tradition. Both are equally important. You either accept it or not.
I also will say a few words here and there in these sorts of threads as a Jewish convert to the one true Faith, the Catholic Faith. People may not listen and can think I’m wrong, but I’m still going to scatter the seeds and then I’ll dust off my sandals. I certainly will not get drawn into the so-called “debates” that is more about putting the other person down.