'Thinks' in the Bible

Let no one deceive himself. If any of you thinks he is wise in the ways of this world, he must become a fool to become really wise.

If a man thinks he is not behaving properly toward his virgin, and if his passion is so strong that he feels he ought to marry her, let him do what he wants; he isn't sinning. Let them get married.

If anyone thinks he really knows something, he has not yet learned it as he ought to know it.

Therefore, whoever thinks he is standing securely should watch out so he doesn't fall.

and she is never rude; she never thinks just of herself or ever gets annoyed. She never is resentful;

If anyone thinks he is a prophet or a spiritual person, he must acknowledge that what I am writing to you is the Lord's command.