Let the brother of low degree rejoice in that he is exalted: But the rich, in that he is made low: because as the flower of the grass he shall pass away. For the sun is no sooner risen with a burning heat, but it withereth the grass, and the flower thereof falleth, and the grace of the fashion of it perisheth: so also shall the rich man fade away in his ways.
We should rejoice when a humble man is exalted. When a man humbles himself before God and becomes a child of His, it is definitely a time to rejoice. That man is no longer double-minded (vs. 8).
The man rich in earthly possessions should not rejoice because those possessions won't save him. They will disappear as quickly as the grass withers. He, too, needs to humble himself before God.