It is clear that when God reveals such a massive addition to the faith HE does not put every apostle immediately into the loop; the matter was not conferred upon then implemented. It was implemented because of the way God brought it forth outside of the constructs of either man. Then it was conferred upon by the greater whole.
It appears that the Spirit did not directly have to tell them to send relief, they were able to determine that themselves. Perhaps He had impressed upon them, perhaps He had developed the desire in their hearts, but, the decision to do it was theirs.