Psalms 64:7

When God brings upon men the mischiefs they have desired on others, it is weight enough to sink a man to the lowest hell. Those who love cursing, it shall come upon them. Those who behold this shall understand, and observe God's hand in all; unless we do so, we are not likely to profit by the dispensations of Providence. The righteous shall be glad in the Lord; not glad of the misery and ruin of their fellow-creatures, but glad that God is glorified, and his word fulfilled, and the cause of injured innocence pleaded effectually. They rejoice not in men, nor in themselves, nor in any creature, or creature enjoyments, nor in their wisdom, strength, riches, or righteousness; but in Christ, in whom all the seed of Israel are justified and glory, and in what he is to them, and has done for them.

But God shall shoot at them with an arrow. They shot, and shall be shot. A greater archer than they are shall take sure aim at their hearts. One of his arrows shall be enough, for he never misses his aim. The Lord turns the tables on his adversaries, and defeats them at their own weapons. Suddenly shall they be wounded. They were looking to surprise the saint, but, lo! they are taken at unawares themselves; they desired to inflict deadly wounds, and are smitten themselves with wounds which none can heal. While they were bending their bows, the great Lord had prepared his bow already, and he let slip the shaft when least they looked for such an unsparing messenger of justice. "Vengeance is mine; I will repay, saith the Lord." The righteous need not learn the arts of self defence or of attack, their avenging is in better hands than their own.