James told his readers to count their trials all joy because it will bear perseverance, get them wisdom and change their perspectives. And, here, he steps further. He asks his readers to know that bearing the trials is a blessing. And this promises the crown of life to those who remains steadfast during the trials. Why the crown of life matter? It's because we are all in death as a result of our sin, and we need life.
In order for us to remain steadfast during the trial, we should always remember that God is not one who tempts or be tempted. It is so easy to blame others during our trials because it gives us a way out to avoid our responsibilities and we can remain blameless. However, that's not right.
James clearly points out that it's not God but us who is responsible. God is not tempting us, but we are lured. This words carries the image that a fish takes a bait. It's not a bait or fishers faults. It's the fish's fault, if it gets caught. In this way, all our failures during the trial, it's not because God planned in that way, but it's because we chose to do it.
Also, our evil desires in us lead us into sin, and which will bring death. Therefore, we should not to have evil desires in us. Especially under the temptation, we are not supposed to change our view or faith in God, but need to look inside, so that which desires in us is working.