9 You have set a boundary that they may not pass over; that they don't turn again to cover the earth.
*Minor differences ignored. Grouped by changes, with first version listed as example.
Thou hast set a bound which they shall not pass The miracle spoken of is in this verse amplified, from its perpetuity. Natural philosophers are compelled to admit, and it is even one of their first principles, that the water is circular, and occupies the region intermediate between the earth and the air. It is entirely owing to the providence of God, that part of the earth remains dry and fit for the habitation of men. This is a fact of which mariners have the most satisfactory evidence. Yea, were even the rudest and most stupid of our race only to open their eyes, they would behold in the sea mountains of water elevated far above the level of the land. Certainly no banks, and even no iron gates, could make the waters, which in their own nature are fluid and unstable, keep together and in one place, as we see to be the case. I have just now said that earthquakes, which bring destruction upon some places, leave the globe, upon the whole, as it was before; and in like manner, although the sea, in some parts of the world, overpasses its boundaries, yet the law, which confines it; within certain limits, stands fast, that the earth may be a fit habitation for men. The Baltic Sea, in our own time, inundated large tracts of land, and did great damage to the Flemish people and other neighboring nations. By an instance of this kind we are warned what would be the consequence, were the restraint imposed upon the sea, by the hand of God, removed. How is it that we have not thereby been swallowed up together, but because God has held in that outrageous element by his word? In short, although the natural tendency of the waters is to cover the earth, yet this will not happen, because God has established, by his word, a counteracting law, and as his truth is eternal, this law must remain steadfast.
Thou hast set a bound that they may not pass over - See Job 26:10, note; Job 38:10-11, note.
That they turn not again to cover the earth - As it was before the dry land appeared; or as the earth was when "darkness was upon the face of the deep" Genesis 1:2, and when all was mingled earth and water. It is "possible" that in connection with this, the psalmist may also have had his eye on the facts connected with the deluge in the time of Noah, and the promise then made that the world should no more be destroyed by a flood, Genesis 9:11, Genesis 9:15.
Thou hast set a bound that they may not pass - And what is this bound? The flux and reflux of the sea, occasioned by the solar and lunar attraction, the rotation of the earth on its own axis, and the gravitation of the waters to the center of the earth. And what is the cause of all these? The will and energy of God. Thus the sea is prevented from drowning the earth equally where there are flat shores as where the sea seems hemmed in by huge mounds of land and mountains. The above, not these, are the bounds which it cannot pass, so that they cannot turn again to cover the earth.
Thou hast set a bound, that they may not pass over,.... The Targum adds,
"to the rolling waves of the sea.''
Set doors with bolts and bars, cliffs, rocks, and shores: and, what is more surprising, sand, which is penetrable, flexible, and moveable, is set as a perpetual bound to the raging ocean and its waves, which they cannot pass over: see Job 38:8. So the Lord has set a bound to the proud waters of afflictions, and says, Thus far shall ye go, and no farther; and to the life of man, which he cannot exceed, Job 14:5. But he has given man a law, as a rule to walk by, as the boundary of his conversation, and this he transgresses; in which he is less tractable than the raging sea and its waves. That they turn not again to cover the earth; as they did when it was first made, Psalm 104:6 that is, not without the divine leave and power; for they did turn again and cover the earth, at the time of the flood; but never shall more. Some think there is no need to make this exception; since this was written after the flood, and when God had swore that the waters should no more go over the earth, Isaiah 54:9.
A bound - Even the sand of the sea - shore.
*More commentary available at chapter level.