James 1:10

and the rich brother rejoice in his being on a level with the poor, because the rich will fade away like the flower of the grass.

1 Peter 1:24

For "All human life is just like grass, and all its glory like the flower of grass. The grass dries up; the flowers drop off.

1 Corinthians 7:31

and those who are enjoying the world as though they were not entirely absorbed in it. For the outward order of this world is passing away.

Matthew 5:3

"Blessed are those who feel poor in spiritual things, for the kingdom of heaven belongs to them.

Matthew 6:30

Now if God so gorgeously dresses the wild grass which today is green but tomorrow is tossed into the furnace, will He not much more surely clothe you, O you with little faith?

Philippians 3:8

Yes, indeed, I certainly do count everything as loss compared with the priceless privilege of knowing Christ Jesus my Lord. For His sake I have lost everything, and value it all as mere refuse, in order to gain Christ

1 Timothy 6:17

Continue charging the rich of this world to stop being haughty and not to fix their hope on a thing so uncertain as riches, but on God who richly and ceaselessly provides us with everything for our enjoyment;

James 4:14

although you do not have the slightest knowledge of tomorrow. What is the nature of your life? It is really nothing but a mist which appears for a little while and then disappears.

1 John 2:17

and the world is passing away and with it the evil longings it incites, but whoever perseveres in doing God's will lives on forever.

Treasury of Scripture Knowledge

Summary

But the rich, in that he is made low: because as the flower of the grass he shall pass away.

General references

Bible References

In

Matthew 5:3
"Blessed are those who feel poor in spiritual things, for the kingdom of heaven belongs to them.
Philippians 3:8
Yes, indeed, I certainly do count everything as loss compared with the priceless privilege of knowing Christ Jesus my Lord. For His sake I have lost everything, and value it all as mere refuse, in order to gain Christ
1 Timothy 6:17
Continue charging the rich of this world to stop being haughty and not to fix their hope on a thing so uncertain as riches, but on God who richly and ceaselessly provides us with everything for our enjoyment;

Because

James 4:14
although you do not have the slightest knowledge of tomorrow. What is the nature of your life? It is really nothing but a mist which appears for a little while and then disappears.
Matthew 6:30
Now if God so gorgeously dresses the wild grass which today is green but tomorrow is tossed into the furnace, will He not much more surely clothe you, O you with little faith?
1 Corinthians 7:31
and those who are enjoying the world as though they were not entirely absorbed in it. For the outward order of this world is passing away.
1 Peter 1:24
For "All human life is just like grass, and all its glory like the flower of grass. The grass dries up; the flowers drop off.
1 John 2:17
and the world is passing away and with it the evil longings it incites, but whoever perseveres in doing God's will lives on forever.

General references

2 Corinthians 10:17
"But the man who boasts must boast in the Lord.