1 Peter 1:22-25

Now that by your obedience to the truth you have purified yourselves and have come to have a sincere love for your fellow-believers, love one another earnestly with all your heart. For through the living and eternal word of God you have been born again as the children of a parent who is immortal, not mortal. As the scripture says: “All human beings are like grass, and all their glory is like wild flowers. The grass withers, and the flowers fall, but the word of the Lord remains for ever.” This word is the Good News that was proclaimed to you.