Christian in Christendom or in Christianity

Often a lot of people do not know to differentiate between Christendom, Christianity, religiosity and even limit religiousness to Christians, forgetting that there are many other religious groups who have all sorts of worship.

A Book to trust #16 Biblical archaeology vs Historical science or study #1 Flat or round earth

The Elohim wants people to have a willingness to hear His Word Which He offers as a schooling-tool enabling all people to get insight and wisdom. Most of the time people did not want to listen to His word and preferred to follow their own fantasies or what they thought would be scientific right. As such we got creationists, flat earth believers, and many others, who after science brought some proves still did not want to believe it.