Every word which God hath spoken to his people by way of promise is as true today as when it was first uttered by the prophet… if this world should exist through tens of thousands of years, every promise will still have … it’s youth about it. No promise will grow stale; no word of God will cease to be of effect. It may have been fulfilled ten thousand times ten thousand times, but it will be fulfilled still. – Spurgeon
“A voice says, “Cry!” And I said, “What shall I cry?” All flesh is grass, and all its beauty is like the flower of the field. The grass withers, the flower fades when the breath of the Lord blows on it; surely the people are grass. The grass withers, the flower fades, but the word of our God will stand forever.”
Isaiah 40:6-8 ESV