2 Samuel 21:11

And it was told David what Rizpah the daughter of Aiah, the concubine of Saul, had done.

Word reached David of what Rizpah the daughter of Aiah, the concubine of Saul, had done. That report stands within an account that keeps on displaying David's kindness toward Saul's house. The chapter teaches that God holds His people collectively responsible for the transgressions of a few when the many allow the sin to continue. It exemplifies God's opposition to oppression even when it is directed against those outside the household of faith.