Mark 1:19

1:19 Going on a little farther, he saw James, the son of Zebedee, and John his brother in their boat mending nets.

Mark 3:17-18

3:17 to James and his brother John, the sons of Zebedee, he gave the name Boanerges (that is, “sons of thunder”); 3:18 and Andrew, Philip, Bartholomew, Matthew, Thomas, James the son of Alphaeus, Thaddaeus, Simon the Zealot,

Mark 5:37

5:37 He did not let anyone follow him except Peter, James, and John, the brother of James.