III. The enquiry which the prophet made concerning the meaning of this, and the gentle reproof given him for his dulness (v. 4): I answered and spoke to the angel, saying, What are these, my lord? Observe how respectfully he speaks to the angel; he calls him my lord. Those that would be taught must give honour to their teachers. He saw what these were, but asked what these signified. Note, It is very desirable to know the meaning of God's manifestations of himself and his mind both in his word and by his ordinances and providences. What mean you by these services, by these signs? And those that would understand the mind of God must be inquisitive. Then shall we know if we follow on to know, if we not only hear, but, as Christ, ask questions upon what we hear, Luke ii. 46. The angel answered him with a question, Knowest thou not what these be? intimating that if he had considered, and compared spiritual things with spiritual, he might have guessed at the meaning of these things; for he knew that there was a golden candlestick in the tabernacle, which it was the priests' constant business to supply with oil and to keep burning, for the use of the tabernacle; when therefore he saw, in vision, such a candlestick, with lamps always kept burning, and yet no priests to attend it, nor any occasion for them, he might discern the meaning of this to be that though God had set up the priesthood again, yet he could carry on his own work for and in his people without them. Note, We have reason to be ashamed of ourselves that we do not more readily apprehend the meaning of divine discoveries. The angel asked the prophet this question, to draw from him an acknowledgment of his own dulness, and darkness, and slowness to understand, and he had it immediately: "I said, No, my lord; I know not what these are." Visions had their significance, but often dark and hard to be understood, and the prophets themselves were not always aware of it at first. But those that would be taught of God must see and acknowledge their own ignorance, and their need to be taught, and must apply to God for instruction. To him that gave us the cabinet we must apply for the key wherewith to unlock it. God will teach the meek and humble, not those that are conceited of themselves and lean on the broken reed of their own understanding.