
Image courtesy of the Faithlife Study Bible
Jesus said in the Sermon on the Mount, “Be perfect, therefore, as your heavenly Father is perfect” (Mt 5:48).
This is often interpreted as a call to sinless perfection, something that Christians cannot attain prior to glorification. As such it’s used as a hermeneutical key to understanding the Sermon on the Mount as a whole. In this view, Jesus is not laying out the way of life for his followers. Instead, he is setting the bar so far out of their reach that they must turn to him for mercy and find acceptance in his righteousness.
I fully embrace the theological conclusions of this position: Christians cannot live sinlessly in this life and can only be accepted by God on the basis of the imputed righteousness of Jesus. However, I don’t think this text teaches that.
There are three reasons for understanding this verse as something that every Christian should and can obey.










“When I’m stumped . . . I go to Henry Alford.”
Dan Phillips, who blogs at Biblical Christianity and Pyromaniacs, emailed me about a month ago and asked me about making Henry Alford’s The Greek Testament: With a Critically Revised Text; a Digest of Various Readings; Marginal References to Verbal and Idiomatic Usage; Prolegomena; and a Critical and Exegetical Commentary available for Libronix. In that email he told me that “John Piper names it as the one he always consults.” Recently I asked him if he knew the source for Piper’s statement. He didn’t, but said he’d do some hunting. He asked his blog readers for help, and it was Pilgrim Mommy to the rescue.
I just listened to the end of Piper’s biographical lecture on Owen, and here’s what he says in the Q&A in response to a question about commentaries that he finds helpful:
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