'Reason' in the Bible

This [is] the reason why Joshua circumcised all the people: all the males who went out from Egypt, all the warriors, died in the wilderness as they went out from Egypt {on the journey}.

But in fact, we have done this because of anxiety, because of a reason, saying, 'In the future your children may say to our children, '{What is the relationship between you and Yahweh the God of Israel}?