'Apostles' in the Bible

For in my opinion, I am in no way less than the most important of the Apostles.

For such men are false Apostles, workers of deceit, making themselves seem like Apostles of Christ.

I have been forced by you to become foolish, though it was right for my praise to have come from you: for in no way was I less than the chief of the Apostles, though I am nothing.