56 The punishment ceased, but the wickedness ceased not; for from this very thing a murmuring rose among them that the people had perished through the priests. In His wrath at this, the Lord would have destroyed them all, had He not been moved first by the prayers of Moses and Aaron, and afterwards also at the intervention of His priest Aaron (the humiliation of their forgiveness being thereby greater), He willed to give their lives to those whose privilege they had repudiated.
Source: Letters (New Advent)