This is an extremely Deep Cut. They likely don't have this in mind. But I know these things...
In "Return to Tomorrow", Sargon warns Kirk that the Federation will one day face a calamity just as his society once faced. 600,000 years ago, they explored and colonized the galaxy, so Sargon could've been a representative an earlier version of a Federation.
So, having been through this type of experience before, he probably knew where the Federation might be heading one day. Given that his people thought of themselves as Gods, he probably figured he either knew it to be so or would have faith that it was to be. John Kingsbridge, having been a deeply religious person, had to have also been a deep believer in fate. To quote Mark Twain, "History never repeats itself but it rhymes."