Having purified your souls by your obedience to the truth for a sincere brotherly love, love one another earnestly from a pure heart, since you have been born again, not of perishable seed but of imperishable, through the living and abiding word of God; for
“All flesh is like grass and all its glory like the flower of grass.The grass withers, and the flower falls, but the word of the Lord remains forever.”
And this word is the good news that was preached to you.Now what? Now that we don't have to live in fear of judgement because our Father is judge, what should we do? Be obedient to the truth. Love one another earnestly from a pure heart. Why? Because we have been born again. And this type of born again isn't just a temporary thing like the rest of life. Everything dies. But God's word doesn't.
At my church after the pastor reads the sermon scripture he says, "The grass withers and the flower falls." Then the congregation responds with, "But the word of the Lord remains forever." It's easy to tie this phrase to Scripture. And it is, but it's the premise in this argument. Because God's word is imperishable, the seed of it planted in us will grow strong and not fade or wither.