The object of the Psalmist is to celebrate the advantages which the Lord, by means of his law, bestows on those whom he inwardly inspires with a love of obedience. And he adverts not to the mere precepts, but also to the promise annexed to them, which alone makes that sweet which in itself is bitter. For what is less attractive than the law, when, by its demands and threatening, it overawes the soul, and fills it with terror? David specially shows that in the law he saw the Mediator, without whom it gives no pleasure or delight.