[179] Jer. xxxi. 33. “But this shall be the covenant that I will make with the house of Israel; after those days, saith the Lord, I will put my law in their inward parts, and write it in their hearts, and will be their God, and they shall be my people.” I think the difference here pointed out between these two covenants, lies plainly here, that in the old covenant God promised to be their God upon condition of hearty obedience; obedience was stipulated as a condition, but not promised. But in the new covenant, this hearty obedience is promised if a man be but of the house of Israel, as by faith he becomes so. God promises expressly in this new dispensation that he shall perform a hearty obedience, and so have God for his God. That old covenant they broke, as it is said in the foregoing verse. The house of Israel, these were called so under the Old Testament, could break that; but the new covenant is such as cannot be broken by the spiritual house of Israel, because obedience is one thing that God engages and promises; and therefore this is called an everlasting covenant upon this account, as is plain from chap. xxxii. 40. It is true the true saints, in the Old Testament, could not fall away any more than they can now, but they were not the Old-Testament Israel; and, though God had engaged in his covenant with Christ that they should not fall away, yet he had not expressly revealed that to them. God had not in those days so plainly revealed the primary and fundamental condition of the covenant of grace, viz. faith; but insisted more upon the secondary condition, universal and persevering obedience, the genuine and certain fruit of faith.
[389] Ezekiel. chapter 1. Concerning Ezekiel’s wheels. Divine Providence is most aptly represented by the revolution and course of these wheels: things in their series and course in providence do as it were go round like a wheel in its motion on the earth. That which goes round like a wheel, goes from a certain point or direction, until it gradually returns to it again; so is the course of things in providence.
God’s providence over the world consists partly in his governing the natural world according to the course and laws of nature. This consists wholly as it were in the revolution of wheels. So the annual changes that appear in the natural world are as it were by the revolution of a wheel, or the course of the sun through that great circle the ecliptic, or the ring of that great wheel the zodiac. And so the monthly changes are by the revolution of another lesser wheel within that greater annual wheel; which, being a lesser wheel, must go round oftener, to make the same progress. Ezekiel’s vision was of wheels within wheels, of lesser wheels within greater, which all went round, as though running upon several parallel plains, each touching the circumference of its respective wheel, and all making the same progress, keeping pace one with another; and therefore the lesser wheels must go round so much oftener, according as their circumference was less.
So again the diurnal changes in the natural world are by the revolution of a wheel still within the monthly wheel, and going round about thirty times in one revolution of the other. The system of the universe may exactly answer what is here said of these wheels, and livelily represents God’s providence in the government of the moral world. There is as it were a wheel within a wheel; the whole system is nothing else but wheels within wheels, lesser wheels within greater, revolving oftener. There is the sphere of the fixed stars, which is the greatest wheel, includes all the others, and is many thousand years in performing its revolution. This includes the circle of Saturn’s course, which is a lesser wheel within the other, finishing its revolution in about thirty years. That includes the circle of Jupiter, a lesser wheel, revolving in about twelve years: that includes the circle of Mars, that the circle of the Earth, that of Venus, that of Mercury, that of the Sun, which revolves about its own axis. And some of the greater wheels include lesser and of various kinds, as the great wheel of Saturn, besides those of the inferior planets, has annexed to it those lesser wheels of his satellites one within another, and then its ring, and then its own body about its axis. So of Jupiter, and so of the earth and moon. So some of the grand revolutions of providence that are but parts of the grand system of providence, have a particular system as it were belonging to themselves, wherein the great revolution includes lesser revolutions that are not parallel with any like them, continued from the beginning to the end of time, but begin their various revolutions with that particular great wheel that they are fixed to, and end with it. So it is with that great wheel, the continuance of the Jewish state; so it is with the continuance of the Christian church; so it is with the state of some particular kingdoms and empires; so it is with the motion of the air in the winds, it goes and returns according to its circuits; and so it is with the motion of the water in the tides, and in their course out of the sea, and into the clouds, springs, and rivers, and into the sea again. So it is with the circulation of the blood in a man’s body, and the bodies of other animals; so it is with the life of man; it is like the revolution of a wheel; he is from the earth and gradually rises, and then gradually falls and returns to the earth again. Dust we are, and unto dust we return; we came naked out of our mother’s womb, and naked must we go and return. The dust returns to earth as it was, and the spirit returns to God who gave it. So it is with the world of mankind; it is the whole of it like a wheel; it as it were sinks and goes down to the earth in one generation, and rises in another, as it is with a wheel, at the same time that one side is falling to the earth, another part of the wheel is rising from the earth. Solomon takes notice of these things. Eccles. i. 4, 5, 6, 7, 8. “One generation passeth away, and another cometh: but the earth abideth for ever. The sun also ariseth, and the sun goeth down, and hasteth to the place where he arose. The wind goeth toward the south, and turneth about unto the north; it whirleth about continually, and the wind retumeth again according to his circuits. All the rivers run into the sea; yet the sea is not full; unto the place from whence the rivers come, thither they return again. All things are full of labour; man cannot utter it.”