2 Samuel 12:1-7a (NRSV)
1 The Lord sent Nathan to David. He came to him, and said to him, “There were two men in a certain city, the one rich and the other poor. 2 The rich man had very many flocks and herds; 3 but the poor man had nothing but one little ewe lamb, which he had bought. He brought it up, and it grew up with him and with his children; it used to eat of his meager fare, and drink from his cup, and lie in his bosom, and it was like a daughter to him. 4 Now there came a traveler to the rich man, and he was loath to take one of his own flock or herd to prepare for the wayfarer who had come to him, but he took the poor man’s lamb, and prepared that for the guest who had come to him.” 5 Then David’s anger was greatly kindled against the man. He said to Nathan, “As the Lord lives, the man who has done this deserves to die; 6 he shall restore the lamb fourfold, because he did this thing, and because he had no pity.” 7a Nathan said to David, “You are the man!
Psalm 51:1-2, 10-12 (NRSV)
1 Have mercy on me, O God, according to your steadfast love; according to your abundant mercy blot out my transgressions. 2 Wash me thoroughly from my iniquity, and cleanse me from my sin. 10 Create in me a clean heart, O God, and put a new and right spirit within me. 11 Do not cast me away from your presence, and do not take your holy spirit from me. 12 Restore to me the joy of your salvation, and sustain in me a willing spirit.