What does the Bible say about Satan sifting believers?

In Luke 22:31, Jesus warns Peter that Satan has asked to sift him as wheat, which illustrates Satan's desire to test and expose the weaknesses and impurities in a believer's faith. The act of sifting wheat involves separating the grain from the chaff, symbolizing the trials and challenges believers face in their walk of faith. However, Jesus assures Peter, 'I have prayed for you that your faith may not fail.' Despite Satan's intentions to destroy, the Lord's intercession ensures that true believers will ultimately persevere in their faith and be restored to strengthen others.