And going on a little farther, he saw James the son of Zebedee and John his brother, who were in their boat mending the nets.
Here is, I. A general account of Christ's preaching in Galilee. John gives an account of his preaching in Judea, before this (ch. 2 and 3), which the other evangelists had omitted, who chiefly relate what occurred in Galilee, because that was least known at Jerusalem. Observe, 1. When Jesus began to preach in Galilee; After that John was put in prison.
Commenting on Mark 1:14-22
And when he had gone a little further thence,.... From the place where Simon and Andrew were casting their nets, though still by the sea side; he saw James the son of Zebedee, and John his brother. The former was be whom afterwards Herod killed with the sword, and the latter the beloved disciple; these were also fishermen: who also were in the ship mending...
And when he had gone a little further thence, he saw James the [son] of Zebedee, and John his brother, who also were in the ship mending their nets. (9) The calling of James and John.