John Calvin Reformed @genevareformer

15 He who hath called you is holy He reasons from the end for which we are called. God sets us apart as a peculiar people for himself; then we ought to be free from all pollutions. And he quotes a sentence which had been often repeated by Moses.

Matthew Henry Presbyterian @wholebiblehenry

Here the apostle begins his exhortations to those whose glorious state he had before described, thereby instructing us that Christianity is a doctrine according to godliness, designed to make us not only wiser, but better. I. He exhorts them to sobriety and holiness. 1. Wherefore gird up the loins of your mind, etc., Pe1 1:13.

Commenting on 1 Peter 1:13-23

John Gill Reformed Baptist @doctorgill

But as he which hath called you is holy,.... Which is a periphrasis of God the Father, who had called them, not merely in an external way, by the outward ministry of the word; but internally, powerfully, and efficaciously, by his Spirit and grace; and who had called them to holiness of life and conversation, as well as in calling had implanted principles of holiness...