according to the foreknowledge of God the Father, in sanctification of the Spirit, that you may obey Jesus Christ and be sprinkled in his blood: Grace to you and peace be multiplied.

 Peter has been talking about the greatness and the glory to which the Christian may look forward; but the Christian can never be lost in dreams of the future; he must always be virile in the battle of the present. So Peter sends out three challenges to his people. 