2 Samuel 12:4

There came a traveller unto the rich man This aptly signifies David's roving affection, which he suffered to wander from his own home, and to covet another man's wife. The Jewish doctors say it represents the evil disposition or desire that is in us, which must be carefully watched and resisted when we feel its motions. But took the poor man's lamb Nathan, in this parable, omits touching the murder committed to cover the adultery, perhaps in order that David might not readily apprehend his meaning, and so be induced, unawares, to pronounce sentence of condemnation upon himself.