1 Peter 1:25 But the word of the Lord endures forever. And this is the word which by the gospel is preached unto you.
As our Lord promises us eternal life, so He promises us an Eternal Word. The promise of an enduring word is given that we might have something solid and lasting to place our hope and trust in. “Heaven and earth will pass away, but my words will never pass away.” Count on it. Everything and everyone else will wear out, die, disappear, disappoint. and let us down, but God’s Promises last forever.
This means that Sin, Death, and everything that diminishes Life will be gone. The only things left will be God, His Kingdom, His Word, and everything good. Even the good works that the Lord has done in us and through us will last forever. ”Blessed are the dead which die in the Lord; even their good works do follow them.”
We learn through life that every created thing in this fallen world, including our bodies, breaks down, wears out, and dies or is trashed. Everything ”under the sun” is vanity. Outside of God, His Word, and His Kingdom, nothing lasts. ”The word of the Lord endures forever.”
This enduring word has been preached to you by the gospel. Through the heard and read Gospel, Life is generated, and that life is maintained and grows strong through hearing the word of Christ. Believers endure forever.