We must take all these verses together, that we may have the parable and the explanation of it at one view before us, because they will illustrate one another. 1. The prophet is appointed to put forth a riddle to the house of Israel (v. 2), not to puzzle them, as Samson's riddle was put forth to the Philistines, not to hide the mind of God from them in obscurity, or to leave them in uncertainty about it, one advancing one conjecture and another another, as is usual in expounding riddles; no, he is immediately to tell them the meaning of it. Let him that speaks in an unknown tongue pray that he may interpret, 1 Cor. xiv. 13. But he must deliver this message in a riddle or parable that they might take the more notice of it, might be the more affected with it themselves, and might the better remember it and tell it to others. For these reasons God often used similitudes by his servants the prophets, and Christ himself opened his mouth in parables. Riddles and parables are used for an amusement to ourselves and an entertainment to our friends. The prophet must make use of these to see if in this dress the things of God might find acceptance, and insinuate themselves into the minds of a careless people. Note, Ministers should study to find out acceptable words, and try various methods to do good; and, as far as they have reason to think will be for edification, should both bring that which is familiar into their preaching and their preaching too into their familiar discourse, that there may not be so vast a dissimilitude as with some there is between what they say in the pulpit and what they say out. 2. He is appointed to expound this riddle to the rebellious house, v. 12. Though being rebellious they might justly have been left in ignorance, to see and hear and not perceive, yet the thing shall be explained to them: Know you not what these things mean? Those that knew the story, and what was now in agitation, might make a shrewd guess at the meaning of this riddle, but, that they might be left without excuse, he is to give it to them in plain terms, stripped of the metaphor. But the enigma was first propounded for them to study on awhile, and to send to their friends at Jerusalem, that they might enquire after and expect the solution of it some time after.