II. The progress and increase of these waters: They went forth eastward (v. 3), towards the east country (v. 8), for so they were directed. The prophet and his guide followed the stream as it ran down from the holy mountains, and when they had followed it about a thousand cubits they went over across it, to try the depth of it, and it was to the ankles, v. 3. Then they walked along on the bank of the river on the other side, a thousand cubits more, and then, to try the depth of it, they waded through it the second time, and it was up to their knees, v. 4. They walked along by it a thousand cubits more, and then forded it the third time, and then it was up to their middle—the waters were to the loins. They then walked a thousand cubits further, and attempted to repass it the fourth time, but found it impracticable: The waters had risen, by the addition either of brooks that fell into it above ground or by springs under ground, so that they were waters to swim in, a river that could not be passed over, v. 5. Note, 1. The waters of the sanctuary are running waters, as those of a river, not standing waters, as those of a pond. The gospel, when it was first preached, was still spreading further. Grace in the soul is still pressing forward; it is an active principle, plus ultra—onward still, till it comes to perfection. 2. They are increasing waters. This river, as it runs constantly, so the further it goes the fuller it grows. The gospel-church was very small in its beginnings, like a little purling brook; but by degrees it came to be to the ankles, to the knees: many were added to it daily, and the grain of mustard seed grew up to be a great tree. The gifts of the Spirit increase by being exercised, and grace, where it is true, is growing, like the light of the morning, which shines more and more to the perfect day. 3. It is good for us to follow these waters, and go along with them. Observe the progress of the gospel in the world; observe the process of the work of grace in the heart; attend the motions of the blessed Spirit, and walk after them, under a divine guidance, as Ezekiel here did. 4. It is good to be often searching into the things of God, and trying the depth of them, not only to look on the surface of those waters, but to go to the bottom of them as far as we can, to be often digging, often diving, into the mysteries of the kingdom of heaven, as those who covet to be intimately acquainted with those things. 5. If we search into the things of God, we shall find some things very plain and easy to be understood, as the waters that were but to the ankles, others more difficult, and which require a deeper search, as the water to the knees or the loins, and some quite beyond our reach, which we cannot penetrate into, or account for, but, despairing to find the bottom, must, as St. Paul, sit down at the brink, and adore the depth, Rom. xi. 33. It has been often said that in the scripture, like these waters of the sanctuary, there are some places so shallow that a lamb may wade through them, and others so deep that an elephant may swim in them. And it is our wisdom, as the prophet here, to begin with that which is most easy, and get our hearts washed with those things before we proceed to that which is dark and hard to be understood; it is good to take our work before us.