Different Bibles, in the first Chapter of James (verse 2), call it different things - Perseverance, steadfastness, or endurance. I'm calling it persistence. And we are told it is such a valuable thing.
And we get it by our faith being tested. The stakes get higher, the calling deeper. And what we say in the light of day is sorely tested in the darkest night. So, we are told, when trials come, it is an opportunity for great joy - as our faith might grow, and our persistence become. more real, and more dependable.