So you say you can't trust Muslims and Jews, who say that this life is just a testing field and the results are yet to come in a third life, the afterlife. But we should trust real Christians like you who say, this life is already the paradise, because you came to believe in God? Even though it's full of pain, conflicts, injustice, sickness and death (=tests)? Do real Christians not die? Therefor isn't their paradise limited to a life span?
And when you say we may be able to return (to paradise), isn't this a contradiction?
And what does Christianity say about your constant insults? To God, to other humans? Is that paradise-worthy? You think you gained paradise while still being so insecure that you need to resort to insults?