Isaiah 40:8

6 A voice says, “Cry out!” And I asked, “What should I cry out?” “All flesh is like grass, and all its glory like the flowers of the field.

7 The grass withers and the flowers fall when the breath of the LORD blows on them; indeed, the people are grass.

The grass withers and the flowers fall, but the word of our God stands forever.”

9 Go up on a high mountain, O Zion, herald of good news. Raise your voice loudly, O Jerusalem, herald of good news. Lift it up, do not be afraid! Say to the cities of Judah, “Here is your God!”

10 Behold, the Lord GOD comes with might, and His arm establishes His rule. His reward is with Him, and His recompense accompanies Him.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
The grass withers and the flowers fall, but the word of our God stands forever.”
KJV
The grass withereth, the flower fadeth: but the word of our God shall stand for ever.
WEB
The grass withers, the flower fades; but the word of our God stands forever.”
ASV
The grass withereth, the flower fadeth; but the word of our God shall stand forever.
DARBY
The grass withereth, the flower fadeth; but the word of our God abideth for ever.
BLB
The grass withers, the flower fades, and the word of our God stands forever.”
ÅB
Gresset blir tørt, blomsten visner; men vår Guds ord står fast til evig tid.
OTB
Gresset visner og blomstene falmer, men vår Guds ord varer evig.
B1930
Gresset blir tørt, blomsten visner; men vår Guds ord står fast til evig tid.

Study notes (Tyndale)

Original text and word study

Cross references