3. That God had taken care of their education as they grew up. This instance of God's goodness we have, v. 10. As by a prophet he delivered them, so by prophets he still continued to speak to them. Man, who is formed out of the earth, is fed out of the earth; so that nation, that was formed by prophecy, by prophecy was fed and taught; beginning at Moses, and so going on to all the prophets through the several ages of that church, we find that divine revelation was all along their tuition. (1.) They had prophets raised up among themselves (Amos ii. 11), a succession of them, were scarcely ever without a Spirit of prophecy among them more or less, from Moses to Malachi. (2.) These prophets were seers; they had visions, and dreams, in which God discovered his mind to them immediately, with a full assurance that it was his mind, Num. xii. 6. (3.) These visions were multiplied; God spoke not only once, yea, twice, but many a time; if one vision was not regarded, he sent another. The prophets had variety of visions, and frequent repetitions of the same. (4.) God spoke to them by the prophets. What the prophets received from the Lord they plainly and faithfully delivered to them. The people at Mount Sinai begged that God would speak to them by men like themselves, and he did so. (5.) In speaking to them by the prophets he used similitudes, to make the messages he sent by them intelligible, more affecting, and more likely to be remembered. The visions they saw were often similitudes, and their discourses were embellished with very apt comparisons. And, as God by his prophets, so by his Son, he used similitudes, for he opened his mouth in parables. Note, God keeps an account, whether we do or no, of the sermons we hear; and those that have long enjoyed the means of grace in purity, plenty, and power, that have been frequently, faithfully, and familiarly, told the mind of God, will have a great deal to answer for another day if they persist in a course of iniquity.