As in the days of Noah... It's interesting - in Matt 24 and Luke 17 - They did not know... We see this phrase from Matt 24:39 "and did not know until the flood came and took them all away.... " in both of these accounts... Did not know WHAT? Did they not know ABOUT the prophecies of the flood and judgement on all man? Did they not know because it was never revealed? AKA - they were "Unlearned" or "Simple".. and they would not be responsible.. God is mean and unpredictable and likes to smite man? Enoch and Noah were both prophets proclaiming the evil of man and the coming destruction.. Ref Hebrews, Jude, 1st and 2nd Peter... OR.. They didn't "Know" it was really coming THEN because they weren't paying attention... That they had heard but just like today - they IGNORE... They are "Ignorant".. not paying attention to the signs, ignoring the warnings... They "Know" about that stuff... but it's just a story - not a reality... or I am righteous - God won't do that to me... They "Don't Know" it's REAL and it's for today... They didn't know because they were FOOLS - because they had Heard and Ignored and didn't care... They became ignorant... Romans 1:21-22 because, although they knew God, they did not glorify Him as God, nor were thankful, but became Vain/Empty in their thoughts, and their foolish (Simple, Unlearned) hearts were darkened. Professing to be wise, they became fools, (Fools here in the Proverb Fools sense, Ignorant - intentionally Ignoring not Unlearned/simple) This wraps back around to the importance of Acts 17:11... Be willing to hear the Word with all readiness of mind, but checking the scriptures daily to verify it is so. How is this even more an indictment against ourselves.... We have all the scriptures... WE KNOW... we have the entire bible to learn from.... Are we Simple - without knowledge... or are we Fools.. Unwilling to listen, understand, accept correction, and learn?