Not claiming "omniscience". Just making a reasonable assessment of the available evidence (I would argue). Just because atheists are wrong, doesn't mean I'm wrong.
Just the fact that you have to reach back 35 years in your own life, sets off the alarm bells. I certainly don't have to reach back 35 years to have witnessed someone practicing the gift of hospitality, the gift of teaching, the gift of service, etc. And even then...your story has some 'second-hand' aspects to it...and one would wonder how accurate is the discernment and observational powers of a 9-year-old (was it?). No offense. It's just that i am looking at the big picture of "dog and pony show" Charismatic "healing" practices.
The first grand observation that I've never seen rebutted...is the total absence of the Gift of Tongues in speaking other earthly languages. there should be hundreds if not thousands of Charismatic missionaries who have fanned out all over the globe and who have gone directly to various countries with an immediate ability to speak in all the foreign languages without making a stop at the language institute.
And so if you add to that the fact that in my 60 years of being in the church world, I have seen neither hide nor hair of any Jesus-style over-the-top uber-miracle...in which there were missing eyeballs, severed spinal cord paralysis, etc.
Now...you're are telling me your favorite story. But again, 'sign gifts' are for MY eyeballs, not yours. You're not supposed to be telling me what I should believe based on what you've seen. You're supposed to demonstrate the gift directly to my eyeballs...or else don't ask of me to believe your second-hand story. No one, in the early Christian era, was asking non-believers to believe some 'crazy' story about someone being able to stand up during the service and spontaneously speaking in Russian (or whatever) and then some other person being able to interpret.
No, they would take that non-believer directly to a fellowship group. Brother, you can't do that! If you claim otherwise, you're in denial.
Because the gifts back in those days were still ongoing, any believer could eagerly invite a non-believer to the fellowship, confident that this person would see something convincingly miraculous...whether a healing, or an ability to speak in a foreign language, etc.