Charles H. Spurgeon on Psalms 7:13

Even now the thirsty arrow longs to wet itself with the blood of the persecutor. The bow is bent, the aim is taken, the arrow is fitted to the string, and what, O sinner, if the arrow should be let fly at thee even now! Remember, God's arrows never miss the mark, and are, every one of them, "instruments of death." Judgment may tarry, but it will not come too late. The Greek proverb saith, "The mill of God grinds late, but grinds to powder."