Charles H. Spurgeon on Psalms 38:16

For I said, hear me, lest otherwise they should rejoice over me. The good man was not insensible, he dreaded the sharp stings of taunting malice; he feared lest either by his conduct or his condition, he should give occasion to the wicked to triumph. This fear his earnest desires used as an argument in prayer as well as an incentive to prayer. When my foot slippeth, they magnify themselves against me. The least flaw in a saint is sure to be noticed; long before it comes to a fall the enemy begins to rail, the merest trip of the foot sets all the dogs of hell barking. How careful ought we to be, and how importunate in prayer for upholding grace! We do not wish, like blind Samson, to make sport for our enemies; let us then beware of the treacherous Delilah of sin, by whose means our eyes may soon be put out.