Commentators explain that this verse illustrates a profound principle of divine justice: what you put out into the world comes back to you. The psalmist's enemy loved to curse others and took no delight in blessing them. As a direct consequence, cursing became his own reality, and blessing was removed from him. As one scholar notes, this is like the proverb, "Curses, like chickens, always come home to roost." This serves as a sober warning that a life dedicated to harm will bring ruin upon oneself.