29:29 Moses ends his prophecy of the Jews' rejection, just as St. Paul ends his discourse on the same subject, when it began to be fulfilled, Ro 11:33. We are forbidden curiously to inquire into the secret counsels of God, and to determine concerning them. But we are directed and encouraged, diligently to seek into that which God has made known. He has kept back nothing that is profitable for us, but only that of which it is good for us to be ignorant. The end of all Divine revelation is, not to furnish curious subjects of speculation and discourse, but that we may do all the words of this law, and be blessed in our deed. This, the Bible plainly reveals; further than this, man cannot profitably go. By this light he may live and die comfortably, and be happy for ever.
29. The secret things belong unto the Lord—This verse has no apparent connection with the thread of discourse. It is thought to have been said in answer to the looks of astonishment or the words of inquiry as to whether they would be ever so wicked as to deserve such punishments. The recorded history of God's providential dealings towards Israel presents a wonderful combination of "goodness and severity." There is much of it involved in mystery too profound for our limited capacities to fathom; but, from the comprehensive wisdom displayed in those parts which have been made known to us, we are prepared to enter into the full spirit of the apostle's exclamation, "How unsearchable are his judgments" (Ro 11:33).