Mark 3:13-19

Jesus selects the twelve Disciples Mark 3:13-19; Luke 6:12-16; Mark 3:13 And he goeth up into a mountain, Luke 6:12 And it came to pass in those days, that he went out into a mountain to pray, and continued all night in prayer to God. and calleth [unto him] whom he would: and they came unto him. Luke 6:13 And when it was day, he called [unto him] his disciples: Mark 3:14 And he ordained twelve, that they should be with him, and that he might send them forth to preach, and of them he chose twelve, whom also he named apostles; Mark 3:15 And to have power to heal sicknesses, and to cast out devils: Mark 3:16 And Simon he surnamed Peter;

Mark 3:17 And James the [son] of Zebedee, and John the brother of James; and he surnamed them Boanerges, which is, The sons of thunder:

Mark 3:18 And Andrew, and Philip, and Bartholomew, and Luke 6:14 Simon, (whom he also named Peter,) and Andrew his brother, James and John, Philip and Bartholomew, Matthew, and Thomas, and James the [son] of Alphaeus, and Thaddaeus, and Simon the Canaanite, Luke 6:15 Matthew and Thomas, James the [son] of Alphaeus, and Simon called Zelotes, Mark 3:19 And Judas Iscariot, which also betrayed him: and they went into an house. Luke 6:16 And Judas [the brother] of James, and Judas Iscariot, which also was the traitor.

Lists of disciples compared Matthew 10:2-4; Mark 3:13-19; Luke 6:12-16; Acts 1:13-14 Simon (Peter) Simon (Peter) Simon (Peter) Peter James, Son of Zebedee James, Son of Zebedee James James John, the brother of James John, the brother of James John John Andrew Andrew Andrew Andrew Philip Philip Philip Philip Bartholemew Bartholemew Bartholemew Bartholemew Matthew Matthew Matthew Matthew Thomas Thomas Thomas Thomas James, son of Alphaeus James, son of Alphaeus James, son of Alphaeus James, son of Alphaeus Thaddaeus Thaddaeus - - - - - - - - - - Simon the Zealot Simon the Zealot Simon the Zealot Simon the Zealot Judas Iscariot Judas Iscariot Judas Iscariot - - - - - - - - - - Judas the son of James Judas the son of James The difference in content occurs with Thaddaeus and Judas the son of James. The most logical explanation is that both names describe the same person.  Judas the son of James would have been sharing the name of Judas Iscariot, the betrayer of Christ.  Most probably, he preferred to be called Thaddeus.