Here Peter is quoting several places in Leviticus where God commands His people to reflect His holiness in their lives…in fact, the major theme of Leviticus is holiness unto the Lord. We’ve been called to live holy lives…it’s the ultimate purpose of our existence…not happiness nor health, but holiness and glorifying God by mirroring and reflecting the moral character and activity of Him. In other words, we are to imitate His goodness. And as Isaiah 35:8 points out, it is called the Way of Holiness or the Road of Salvation where we are to adhere to and closely follow… as we learn to conform more and more to His image .
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