That doctrinal or dogmatic purpose characterises all the miracles in varying degrees. It is the only purpose of the one before us. This singular miracle of finding the coin in the fish's mouth and giving it for the tribute-money is unlike our Lord's other works in several particulars. It is the only miracle--with the exception of the cursing of the barren fig-tree, and the episode of the unclean spirits entering into the swine--in which there is no message of love or blessing for man's sorrow and pain. It is the only miracle in which our Lord uses His power for His own service or help, and it is like the whole brood of legendary miracles, and unlike all the rest of Christ's in that, at first sight, it seems done for a very trivial end--the providing of some three shillings of our money. Now, if we put all these things together, the absence of any alleviation of man's sorrow, the presence of a personal end, and the apparent triviality of the result secured, I think we shall see that the only explanation of the miracle is given by regarding it as being what I may call a teaching one, full of instruction with regard to our Lord's character, person, and work. It is a parable as well as a miracle, and it is in that aspect that I wish to look at it now, and try to bring out its lessons. I. We have here, first, the freedom of the Son. The whole point of the story depends upon the fact that this tribute-money was not a civil, but an ecclesiastical impost. It had originally been levied in the Wilderness, at the time of the numbering of the people, and was enjoined to be repeated at each census, when every male Israelite was to pay half a shekel for 'a ransom for his soul,' an acknowledgment that his life was forfeited by sin. In later years it came to be levied as an annual payment for the support of the temple and its ceremonial. It was never compulsory, there was no power to exact it. The question of the collectors, 'Doth not your Master pay tribute?' does not sound like the imperative demand which a 'publican' would have made for payment of an impost due to the Roman Government. It was an 'optional church-rate,' and the very fact that it was so, would make Jews who were, or wished to be considered, patriotic or religious, the more punctilious in paying it.