Charles H. Spurgeon on Psalms 13:4

Another plea is urged in the fourth verse, and it is one which the tried believer may handle well when on his knees. We make use of our arch-enemy for once, and compel him, like Samson, to grind in our mill while we use his cruel arrogance as an argument in prayer. It is not the Lord's will that the great enemy of our souls should overcome his children. This would dishonour God, and cause the evil one to boast. It is well for us that our salvation and God's honour are so intimately connected, that they stand or fall together.

Our covenant God will complete the confusion of all our enemies, and if for awhile we become their scoff and jest, the day is coming when the shame will change sides, and the contempt shall be poured on those to whom it is due.