And the LORD said unto me, Cast it unto the potter: a goodly price that I was prised at of them. And I took the thirty pieces of silver, and cast them to the potter in the house of the LORD. And the Lord said unto me, Cast it unto the potter - Jehovah calls the price of his prophet his own price; and commands that it should not be accepted, but given to a potter, to foreshadow the transaction related Matthew 27:7.
"Earthen vessels were used in the temple; and we may suppose that some Levites were employed within the sacred precincts to furnish them. To these, the humblest of his ministers in the temple, God commands that the degrading price should be cast." This is the substance of the notes on these two verses, given by Abp. Newcome.
We may look at it in another light, Give me my price! הבו שכרי habu sichri, bring my price, or give him any price; that is, Give the money to Judas which you have agreed to give him; for he can neither betray me nor you crucify me, but my own permission. But if not, forbear; take time to consider this bloody business, and in time forbear. For though I permit you to do it, yet remember that the permission does not necessitate you to do it; and the salvation of the world may be effected without this treachery and murder.
See my notes on this place, Matthew 27:9, where I have examined the evidence for the reading of "Zechariah the prophet," instead of "Jeremiah."