How does Bruce get money to pay for drugs for a measles epidemic?

Bruce believes that God will provide the drugs somehow. When Bruce goes to the post office at Cucuta he finds a check for five hundred dollars in his box. He purchases the drugs telling the clerk that he will be back shortly with the rest of the money. The day before he leaves Cucuta, he again checks the post office box and finds another one hundred dollars. Bruce pays the rest of the drug bill and buys some essentials.