Expositor's Bible Commentary Commentary 1 Peter 1:25

"But the word of the Lord abideth for ever. And this is the word of good tidings which was preached unto you." — 1 Peter 1:25 (ASV)

Peter now applies Isaiah’s words. Since Jesus is equivalent to the Lord in the OT, his utterances endure. So he stresses the specifically Christian application of the Isaiah prophecy. The reliable message about Jesus as proclaimed to Peter’s readers gives life and transforms life so that Christians are able to love.