Charles H. Spurgeon on Psalms 119:53

Because of the wicked that forsake thy law. David grieved, not because he was himself attacked; but because the law of God was forsaken; and he bewailed the condemnation of those who so did, because they are lost to God. Just as a good father in the madness of his son, when he is ill used by him, mourns not his own but the misery of the diseased; and he grieves at the contumely, not because it is cast on himself, but because the diseased person knows not what he does in his madness: so a good man, when he sees a sinner neither reverence nor honour the grey hairs of a parent, that to his face he can insult him, that he does not know in the madness of sinning what unbecoming and shameful things he does, grieves for him as one on the point of death, laments him as one despaired of by the physicians. As a good physician in the first place advises, then, even if he receive hard words, though he be beaten, nevertheless as the man is ill he bears with him; and if he be cursed he does not leave; and any medicine that may be applied he does not refuse; nor does he go away as from a stubborn fellow, but strives with all diligence to heal him as one that has deserved well from him, exercising not only the skill of science but also benignity of disposition. Even so, a righteous man, when he is treated with contempt, does not turn away, but when he is calumniated he regards it as madness, not as depravity; and desires rather to apply his own remedy to the wound, and sympathises, and grieves not for himself but for him who labours under an incurable disease. Ambrose.