I understand that too, but I am referring to Noah and his family being spared when God judged the world with flood.
And other incidences too...
That’s fine but your primary example is 8 people and everyone else perished. That’s not going to happen this time. You can’t guarantee just because you’re Christian you’re getting through anything unscathed or alive. Or to use your example, you can’t know if you’re “one of the 8”.