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"As obedient children, do not be conformed to the passions of your former ignorance, but as he who called you is holy, you also be holy in all your conduct, since it is written, 'You shall be holy, for I am holy'" (1 Peter 1:14-16).

In writing to the church, the apostle Peter first reminds the believers of the living hope that they possess through faith in Christ Jesus. Following this reminder, Peter begins by saying "therefore" (v. 13), effectively saying, "In light of the faith you have and the inheritance you possess in Christ live holy lives." In fact, Peter views the believer's change of life after conversion so highly that he states, "be as holy as God himself."

Yet Peter isn't making this up as a new command. He is quoting the words of God himself to the people of ethnic Israel from Leviticus 11:44-45. If holiness was demanded of ethnic Israel, though they were not all God's elect, then this command is superbly important and relevant to the spiritual seed of Abraham, spiritual Israel. That is, this demand for holiness was written for all those who believe in the Christ - you and me.