Mark 13:31

Isaiah 40:8 NIV
The grass withers and the flowers fall, but the word of our God endures forever. ”

Isaiah 51:6 NIV
Lift up your eyes to the heavens, look at the earth beneath; the heavens will vanish like smoke, the earth will wear out like a garment and its inhabitants die like flies. But my salvation will last forever, my righteousness will never fail.

Luke 21:33 NIV
Heaven and earth will pass away, but my words will never pass away.

Matthew 24:35 NIV
Heaven and earth will pass away, but my words will never pass away.