I'm going to need to refer to those points to address the coherence of your argument.
You believe the promises attributed to Jesus because they appear in the Bible, and you believe the Bible because you believe there is a god because there are good arguments that one exists, and that therefore miracles can happen such as a resurrection. Also, the Bible contains reports of people having witnessed the resurrection of Jesus, and that therefore the promises attributed to him should be believed.
I'd say that even if I agreed that there are good arguments for the existence of a god, there aren't good arguments that it's that god specifically, nor that gods would likely perform miracles on earth, nor that if they did, that a resurrection of Jesus was among them, nor that the reports in the Bible are historically reliable, so I'll remain skeptical of those promises, especially given that the promises made that can be tested before death (prayer works, faith can move mountains) weren't kept.
And it's fine to use the word testimony where it applies, which is whenever somebody reports that they have seen, heard, or done something with or without corroboration, although the word implies a formal questioning as in a courtroom. The reports of people claiming to have witnessed a resurrection can be called testimony, but that's stretching the word a bit if they weren't asked whether they saw one. That's a fine point and nothing to quibble over. When you use the term to apply to the conclusions of a scientific paper, for example, that you've deviated from the most literal meaning of the word as in testimony given under oath by too much.
The skeptic's view is that an idea ought to be sufficiently supported with evidence before it is believed. You haven't done that. You claimed that there were good arguments to believe that a god exists without offering any and then assumed you knew which god that was and what it did because if there's a god, it might have resurrected Jesus, the evidence for that being the claims in biblical scripture. That's not enough for me to believe the promises Jesus is said to have made.
I've wondered that, too. He just spelled Jesus "Jesús." Leroy doesn't like to discuss his personal life at all. I'd love to know what country he lives in, his native tongue, what other languages he speaks, his occupation, marital status, kids if any, or why he chose The Brain as his avatar, but he doesn't refer to such things. His profile says he's 35 yo.