as children of obedience, not conforming yourselves according to your former lusts as in your ignorance,

 (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. 