Matthew 27:7

“And they took counsel, etc.] With one another, considered of the matter, and deliberated about it a while; and at last came to a resolution, and bought with them the potter’s field, to bury strangers in: a field of no great value, or it could not have been bought so near Jerusalem for so small a sum as thirty pieces of silver. Grotius’s conjecture seems to be a good one, that it was a field the potter had dug up for his use, and had made the most of it; so that it was good for nothing, but for the purpose for which these men bought it, “to bury strangers in”: either such as were not of their own nation, as the Roman soldiers, many of which were among them, and who they did not suffer to be…”

“And they took counsel ... - They consulted among themselves about the proper way to dispose of this money. And bought with them - In Acts 1:18, it is said of Judas that “he purchased a field with the reward of his iniquity.” By the passage in the Acts is meant no more than that he “furnished the means” or “was the occasion” of purchasing the field. It is not of necessity implied that Judas actually made the contract and paid down the money to buy a field to bury strangers in - a thing which would be in itself very improbable, but that it was “by his means” that the field was purchased. It is very frequent in the Scriptures, as well as in other writings, to represent a man as doing that which…”

“They bought with them the potter's field - Well known, it seems, by that name. This was a small price for a field so near Jerusalem. But the earth had probably been digged for potters' vessels, so that it was now neither fit for tillage nor pasture, and consequently of small value. Foreigners - Heathens especially, of whom there were then great numbers in Jerusalem. Matthew 27:9”

“27:7 Foreigners were Gentiles who died in Jerusalem. An asset whose owner could not be traced was used for public charity. In this instance, unclean money was used to buy an unclean place for unclean people.”