Verse 18. - Surely thou didst set them up in slippery places. The wicked have at no time any sure hold on their prosperity. They are a "set in slippery places" - places from which they may easily slip and fall. Thou castedst them down to destruction. The fall often comes, even in this life. The flourishing cities of the plain are destroyed by fire from heaven; Pharaoh's land is ruined by the plagues, and his host destroyed in the Red Sea; Sennacherib's army perishes in a night; Jezebel is devoured by dogs; Athaliah is slain with the sword; Antiochus Epiphanes perishes in a distant expedition; Herod Agrippa is eaton of worms; persecutors, like Nero, Galerius, Julian, come to untimely ends. A signal retribution visits the wicked in hundreds and thousands of instances. When it does not, the question remains - Is death the end? This point is not formally brought forward, but it underlies the whole argument; and, unless retribution after death be regarded as certain, a single exception to the general rule of retribution in this life would upset the solution which the psalmist finds satisfactory.

73:15-20 The psalmist having shown the progress of his temptation, shows how faith and grace prevailed. He kept up respect for God's people, and with that he restrained himself from speaking what he had thought amiss. It is a sign that we repent of the evil thoughts of the heart, if we suppress them. Nothing gives more offence to God's children, than to say it is vain to serve God; for there is nothing more contrary to their universal experience. He prayed to God to make this matter plain to him; and he understood the wretched end of wicked people; even in the height of their prosperity they were but ripening for ruin. The sanctuary must be the resort of a tempted soul. The righteous man's afflictions end in peace, therefore he is happy; the wicked man's enjoyments end in destruction, therefore he is miserable. The prosperity of the wicked is short and uncertain, slippery places. See what their prosperity is; it is but a vain show, it is only a corrupt imagination, not substance, but a mere shadow; it is as a dream, which may please us a little while we are slumbering, yet even then it disturbs our repose.Surely thou didst set them in slippery places,.... In which a man cannot stand long, and without danger; and the higher they are the more dangerous, being slippery, and such are places of honour and riches. The phrase denotes the uncertainty and instability of these things, and the danger men are in who are possessed of them of falling into destruction and misery. The Targum is,

"thou didst set them in darkness;''

to be in slippery places, and in the dark, is very uncomfortable, unsafe, and dangerous indeed; See Psalm 35:6 and it may be observed, that all this honour, promotion, and riches, are of God; it is he that sets them in these places of honour and profit; and he that sets them up can pull them down, as he does; so it follows,

thou castest them down into destruction: into temporal destruction, by removing them from their high stations into a very low, mean, and contemptible state, as were Shebna and Nebuchadnezzar, Isaiah 22:15 and into everlasting destruction, from whence there is no recovery; see Psalm 55:23.