What does the Bible say about faith failing?

In Luke 22:31-32, Jesus tells Peter that Satan desires to sift him like wheat, but He has prayed for Peter that his faith may not fail. This passage highlights the reality of spiritual warfare and the testing of faith. Jesus intercedes for His followers, demonstrating His commitment to sustaining them in times of trial. The assurance that Christ prays for us underscores the importance of faith in a believer’s life, as without it, we cannot stand against the challenges brought by the enemy.