Since you have purified yourselves by obedience to the truth for sincere mutual love, love one another intensely from a pure heart. You have been born anew, not from perishable but from imperishable seed, through the living and abiding word of God, for:
“All flesh is like grass, and all its glory like the flower of the field;
the grass withers, and the flower wilts; but the word of the Lord remains forever.”
This is the word that has been proclaimed to you.
I Peter 1:22-25