knowing that you were redeemed, not with corruptible things, with silver or gold, from the useless way of life handed down from your fathers,

 (b) Sprinkling with blood was part of the ritual of the setting apart of Aaron and the priests ( Exodus 29:20-21; Leviticus 8:30). It was the sign of setting apart for the service of God. The Christian is specially set apart for the service of God, not only within the Temple, but also within the world. 