James 1:10-11

but one who is rich ought to rejoice at being reduced in circumstances, for the rich will disappear like the wild flowers.

1 Peter 1:24

For "All flesh is like grass, And all its glory like the flower of the grass. The grass withers, And the flower fades,

Treasury of Scripture Knowledge

Summary

Therefore their inhabitants were of small power, they were dismayed and confounded; they were as the grass of the field, and as the green herb, as the grass on the housetops, and as corn blasted before it be grown up.

Bible References

They were

James 1:10
but one who is rich ought to rejoice at being reduced in circumstances, for the rich will disappear like the wild flowers.
1 Peter 1:24
For "All flesh is like grass, And all its glory like the flower of the grass. The grass withers, And the flower fades,