And whatsoever house ye enter into
Fireside preaching
They went from town to town, receiving hospitality, or rather taking it for themselves, according to custom.
The guest in the East has many privileges; he is superior to the master of the house, who has the greatest confidence in him. This fireside preaching is admirably adapted to the propagation of new doctrines. The hidden treasure is communicated, and payment is thus made for what is received; politeness and good feeling lend their aid; the household is touched and converted. Remove Oriental hospitality, and it would be impossible to explain the propagation of Christianity. Jesus, who adhered strongly to good old customs, encouraged His disciples to make no scruple of profiting by this ancient public right, probably already abolished in the great towns where there were hostelries. Once installed in any house, they were to remain there, eating and drinking what was offered them, as long as their mission lasted. (Renan.)
Willing hospitality
When travelling in the East no one need ever scruple to go into the best house of any Arab village to which he comes, and he will always be received with profuse and gratuitous hospitality. From the moment we entered any house it was regarded as our own. There is not an Arab you meet who will not empty for you the last drop in his water-skin, or share with you his last piece of black bread. The Rabbis said that paradise was the reward of willing hospitality. (Schottgen.)