Philo Judaeus De Virtutibus 105

Moreover, extending and carrying further that humanity which is naturally so attractive, he also gives commandments respecting sojourners, thinking it fitting that those persons who, through any temporary distresses, have been driven from their homes should requite those who have received them with a certain degree of honour, with all imaginable respect, if they have done good to them and have treated them with friendliness and hospitality, and with a moderate degree of respect if they have done nothing more than merely receiving them into the land; for to be allowed to abide in a city with which one is wholly unconnected, or, I might even say, to be allowed only to tread on the soil which belongs to another, is in itself a bounty of sufficient magnitude for those persons who are unable to dwell in their own land.