John Chrysostom
Catena Aurea · Matthäusevangelium 10
These twelve Jesus sent forth, and commanded them, saying, Go not into the way of the Gentiles, and into any city of the Samaritans enter ye not: But go rather to the lost sheep of the house of Israel. And as ye go, preach, saying, The kingdom of heaven is at hand. Heal the sick, cleanse the lepers, raise the dead, cast out devils: freely ye have received, freely give.
Observe how He is as careful that they should be upright in moral virtue, as that they should have the miraculous powers, shewing that miracles without these are nought. Freely ye have received, seems a check upon their pride; freely give, a command to keep themselves pure from filthy lucre. Or, that what they should do might not be thought to be their own benevolence, He says, Freely ye have received; as much as to say; Ye bestow nothing of your own on those ye relieve; for ye have not received these things for money, nor for wages of labour; as ye have received them, so give to others; for indeed it is not possible to receive a price equal to their value.