What is the meaning of Matthew 4:21-22?

21 And going on from thence, he saw other two brethren, James the son of Zebedee, and John his brother, in a ship with Zebedee their father, mending their nets; and he called them. 22 And they immediately left the ship and their father, and followed him. (Matthew 4:21-22 KJV)

Spurgeon’s Commentary

21-22  Our Lord delighted in fishermen: possibly their bold, heart:, outspoken character fitted them for his service. At any rate, these would be the briars upon which he could graft the roses of his grace. Some he calls to preach when casting their nets. and some while mending them; but in either case they are busy. We shall need both to cast and mend nets after we are called unto our Lord’s work. Note how our Lord again calls two brethren. Two together are better far than one and one acting singly. The Lord knows that our nature seeks companionship; no companion in work is better than a brother. This second pair of bothers “left their father” as well as their fishery; the first left their nets, but these “left the ship”; the first have no relatives mentioned, but these quitted father and mother for Christ’s sake; and they did it as unhesitatingly as the others. It did not seem much of a prospect, to follow the houseless Jesus; but an inward attraction drew them, and they followed on, charmed to obey the voice divine. Zebedee may have thought his sons’ going was a great loss to him; but it is not recorded that he expressed any objection to their doing so. Perhaps he gladly gave up his boys for such a service; we feel sure that their mother did. In the service of Jesus we are not to be restrained by ties of kindred: he has a higher claim than father or husband. Lord, call me, and my brother, and all my family into thy grace, if not into thy ministry!