But mark both their faith, and their obedience. For though they were in the midst of their work (and you know how greedy a thing fishing is), when they heard His command, they delayed not, ... but "they forsook all and followed," ... Because such is the obedience which Christ seeks of us, as that we delay not even a moment of time.
-St. John Chrysostom, Homily 14 on Matthew 4, 4th Century