When the Spirit of God reveals to man the full meaning of the law, a change takes place in his heart. The faithful portrayal of his true state by the prophet Nathan made David acquainted with his own sins, and aided him in putting them away. He accepted the counsel meekly, and humbled himself before God. "The law of the Lord," he said," is perfect, converting the soul: the testimony of the Lord is sure, making wise the simple. The statutes of the Lord are right, rejoicing the heart: the commandment of the Lord is pure, enlightening the eyes. The fear of the Lord is clean, enduring forever: the judgments of the Lord are true, and righteous altogether. More to be desired are they than gold, yea, than much fine gold: sweeter also than honey and the honeycomb. Moreover by them is thy servant warned: and in keeping of them there is great reward. Who can understand his errors? cleanse thou me from secret faults. Keep back thy servant also from presumptuous sins; let them not have dominion over me: then shall I be upright, and I shall be innocent from the great transgression. Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O Lord, my strength, and my Redeemer."

Når Guds Ånd viser menneskene den fuldstændige betydning af loven, sker der en forandring i dem. Profeten Natans ærlige beskrivelse af Davids sande tilstand, gjorde at David så sin egen synd. Dette hjalp ham til at afstå fra den. Han tog imod det råd han fik og ydmygede sig for Gud. Han siger: "Herrens lov er fuldkommen, den styrker sjælen. Herrens vidnesbyrd står fast, det giver den uerfarne visdom. Herrens forordninger er retskafne, de glæder hjertet. Herrens befaling er ægte, den giver øjnene glans. Herrens ord er rent, det består til evig tid. Herrens bud er sandhed, de er alle retfærdige. De er mere kostbare end guld, end det reneste guld i mængde, de er sødere end honning, end flydende honning. Din tjener lader sig advare af dem, der er stor løn ved at holde dem. Hvem lægger mærke til uforsætlige synder? Rens mig for skjulte synder! Skån også din tjener for de overmodige, lad dem ikke får magt over mig! Da er jeg udadlelig og uden skyld i grov overtrædelse" (Sl 19,8-14).