'Unworthy' in the Bible

Or don’t you know that the saints will judge the world? And if the world is judged by you, are you unworthy to judge the smallest cases?

Therefore, whoever eats the bread or drinks the cup of the Lord in an unworthy way will be guilty of sin against the body and blood of the Lord.

For I am the least of the apostles, unworthy to be called an apostle, because I persecuted the church of God.