I could, if you want, prove the existence of God and the Christian faith logically and make a valid argument. if you would like

they probably do take it seriously, but they have a misinterpretation of the Bible. many people throughout history always misinterpreted Scripture, they don't study the context of the scripture they are reading and then interpret it the way they want it to be disregarding its actual meaning.

it was one of the commandments God gave Noah after He flooded the earth (what you said)

hol' on a minute

everyone is part of a religion.

Atheism and agnosticism both fall in.

religions in short is the theological standpoint of the existence of God, whether there is one, none, or many.