What does 1 Peter 1:25 mean?
Verse 25 completes Peter's quote from Isaiah 40:6–8. Isaiah's poem describes a glorious field of flowering grass that quickly withers and dries up. It's a picture of human existence, intense but all too brief. But that's not the end of the poem. By contrast, the Word of the Lord remains forever. While we may come and go on this side of eternity, one generation after another, God's truth remains the same throughout all of time. It never changes.Peter has made the case in this first part of his letter that the word of the Lord has now been revealed to his readers, and therefore to us as well. Specifically, it is the good news—also called "the gospel"—that was preached to us, which we believed, which made it possible for us to be born again.
Because the word of the Lord remains forever, human beings can, also. We can live forever through believing the word and placing our faith in Christ.