Mark 1:16-20 (NRSV)
16 As Jesus passed along the Sea of Galilee, he saw Simon and his brother Andrew casting a net into the sea—for they were fishermen. 17 And Jesus said to them, “Follow me and I will make you fish for people.” 18 And immediately they left their nets and followed him. 19 As he went a little farther, he saw James son of Zebedee and his brother John, who were in their boat mending the nets. 20 Immediately he called them; and they left their father Zebedee in the boat with the hired men, and followed him.