Have you ever tried to "get through" to an atheist? It's not easy, and the bottom line is, they can't "see" what you're saying, anyway, unless YHWH opens their eyes. The angle I usually try with atheists is to tell them the following:
More than 300 Bible prophecies have already been fulfilled, with just a few more to go (some of which are foreshadowed in the final three biblical Feasts that Yeshua/Jesus will fulfill.
God actually made one of His major end-time prophecies happen in 1948 (and it happened in ONE DAY, just as the Prophet Isaiah foretold [Isaiah 66:7-8]) when the world briefly felt sorry for the Jews because of the Holocaust ... and consequently Israel was returned to them. Yes, God used the idiocy of HITLER to make one of His end time prophecies happen!
Anyway, since more than Bible 300 prophecies have come true, what makes you think the last FEW won't? Time is running out, so why are you gambling with the eternal life that He freely offers?