John Chrysostom
Catena Aurea · Lukasevangelium 9
Then he called his twelve disciples together, and gave them power and authority over all devils, and to cure diseases. And he sent them to preach the kingdom of God, and to heal the sick. And he said unto them, Take nothing for your journey, neither staves, nor scrip, neither bread, neither money; neither have two coats apiece. And whatsoever house ye enter into, there abide, and thence depart. And whosoever will not receive you, when ye go out of that city, shake off the very dust from your feet for a testimony against them. And they departed, and went through the towns, preaching the Gospel, and healing every where.
(ubi sup.) Many things indeed He ordained hereby; first indeed it rendered the disciples unsuspected; secondly, it held them aloof from all care, so that they might give their whole study to the word; thirdly, it taught them their own proper virtue. But perhaps some one will say that the other things indeed are reasonable, but for what reason did He command them to have no scrip on their way, nor two coats, nor staff? In truth, because He wished to rouse them to all diligence, taking them away from all the cares of this life, that they might be occupied by the one single care of teaching.