'Exists' in the Bible

Whatever exists has already been named, and it is known what man is; for he cannot dispute with him who is stronger than he is.

Why do You make me see iniquity,And cause me to look on wickedness?Yes, destruction and violence are before me;Strife exists and contention arises.

For this reason I too, having heard of the faith in the Lord Jesus which exists among you and your love for all the saints,