'Exists' in the Bible

It is actually reported that sexual immorality exists among you, and of a kind that is not found even among the gentiles. A man is actually living with his father's wife!

Food of all kinds is meant for the stomach, and the stomach is meant for food, and God will cause both of them to perish. Yet the body does not exist for the purpose of fornication, but for the Master's service, and the Master exists for the body;

and those who use the world as not using it to the full. For the world as it now exists is passing away.

A man should not cover his head, because he exists as God's image and glory. But the woman is man's glory.