Coin - a Christian perspective
Jesus was once asked if he payed the temple tax. Instead of saying yes or no, he asked Peter who was traditionally responsible for paying taxes, sons of the rulers or from others? Peter answered, from others. Jesus then said that the sons are exempt, meaning that Jesus himself should be exempt, but so that he would not offend anyone he had Peter go out and catch a fish. Inside of the fish's mouth was a coin that covered both their taxes.
http://biblegateway.com/passage/?search=Matthew%2017:25-27&version=NIV