Theophylact of Ohrid
Catena Aurea · Markusevangelium 1
Now as he walked by the sea of Galilee, he saw Simon and Andrew his brother casting a net into the sea: for they were fishers. And Jesus said unto them, Come ye after me, and I will make you to become fishers of men. And straightway they forsook their nets, and followed him. And when he had gone a little farther thence, he saw James the son of Zebedee, and John his brother, who also were in the ship mending their nets. And straightway he called them: and they left their father Zebedee in the ship with the hired servants, and went after him.
For we must not allow any time to lapse, but at once follow the Lord. After these again, He catches James and John, because they also, though poor, supported the old age of their father. Wherefore there follows, And when he had gone a little farther thence, he saw James the son of Zebedee, &c. But they left their father, because he would have hindered them in following Christ. Do thou, also, when thou art hindered by thy parents, leave them, and come to God. It is shewn by this that Zebedee was not a believer; but the mother of the Apostles believed, for she followed Christ, when Zebedee was dead.