What Does “Apostle” Mean in the Bible?

Office or title

It means “one who is sent.” The word is used above all for the Twelve whom Jesus chose to be with him and to send out to preach.

Where it appears in the Bible

Mark 3:14; Luke 6:13

Mark 3:14

And he made that twelve should be with him, and that he might send them to preach.

Luke 6:13

And when day was come, he called unto him his disciples; and he chose twelve of them (whom also he named apostles).

Douay-Rheims Bible (Challoner revision), public domain.

Source: Catechism 858; RAE, “apóstol”; NABRE note on Luke 6:13