How do we know that God uses trials to strengthen our faith?

The process of sifting is a biblical metaphor for God's work in our lives, as seen in Luke 22:31 where Jesus tells Peter that Satan desires to sift him like wheat. Sifting serves to separate the valuable from what is worthless, much like how God uses trials to refine our faith and reveal our dependence on Him, not ourselves. In 1 Peter 1:6-7, Peter writes that trials are necessary to test and prove the genuineness of our faith, ultimately resulting in praise and glory at the revelation of Jesus Christ. Thus, trials are integral to spiritual growth and maturity.