Charles H. Spurgeon on Psalms 73:18

Thou didst set them in slippery places.

1. It implies that they were always exposed to sudden, unexpected destruction. As he that walks in slippery places is every moment liable to fall, he cannot foresee one moment whether he shall stand or fall the next; and when he does fall, he falls at once without warning.

2. They are liable to fall of themselves, without being thrown down by the hand of another; as he that stands or walks on slippery ground needs nothing but his own weight to throw him down.

3. There is nothing that keeps wicked men at any one moment out of hell but the mere pleasure of God. Jonathan Edwards.

Verses 18-20. The end of the wicked is,

1. Near: Thou hast set, etc. It may happen at any time.

2. Judicial: Thou bringest, etc.

3. Sudden: How are they, etc.

4. Tormenting: They are utterly consumed, etc.

5. Eternal: Left to themselves; gone from the mind of God; and disregarded as a dream when one awaketh. No after act respecting them, either for deliverance or annihilation.