http://bible.us/Mark3.13.NLT Afterward Jesus went up on a mountain and called out the ones he wanted to go with him. And they came to him. Then he appointed twelve of them and called them his apostles. They were to accompany him, and he would send them out to preach, giving them authority to cast out demons. These are the twelve he chose:
Simon (whom he named Peter), James and John (the sons of Zebedee, but Jesus nicknamed them “Sons of Thunder”), Andrew,
James (son of Alphaeus),
Simon (the zealot), Judas Iscariot (who later betrayed him).