Hebrew Bible

Isaiah 40:6

4 Every valley must be elevated and every mountain and hill leveled. The rough terrain will become a level plain, the rugged landscape a wide valley. 5 The splendor of the Lord will be revealed, and all people will see it at the same time. For the Lord has decreed it.” 6 A voice says, “Cry out!” Another asks, “What should I cry out?” The first voice responds: “All people are like grass, and all their promises are like the flowers in the field. 7 The grass dries up, the flowers wither, when the wind sent by the Lord blows on them. Surely humanity is like grass. 8 The grass dries up, the flowers wither, but the decree of our God is forever reliable.

Date: 7th-5th Centuries B.C.E.
* Dates are based on scholarly estimates
New Testament

1 Peter 1:24

22 You have purified your souls by obeying the truth in order to show sincere mutual love. So love one another earnestly from a pure heart. 23 You have been born anew, not from perishable but from imperishable seed, through the living and enduring word of God. 24 For all flesh is like grass and all its glory like the flower of the grass; the grass withers and the flower falls off, 25 but the word of the Lord endures forever. And this is the word that was proclaimed to you.

Date: 60-65 C.E. (If authentic), 80-90 C.E. (If anymous)
* Dates are based on scholarly estimates