What does the Bible say about trials in our lives?

In 2 Corinthians 12, the Apostle Paul describes his own trials, specifically a 'thorn in the flesh,' which he received to prevent him from being overly proud due to the revelations he experienced. Paul sought the Lord three times to remove this trial, but he was reminded that God's grace was sufficient for him, and that God's strength is made perfect in weakness. Believers are encouraged to view trials as a means of spiritual growth and maturity, leading them to depend more on Christ and His grace. Romans 5 also echoes this by stating that we can rejoice in our tribulations because they produce perseverance, character, and hope.