1 Thessalonians 3:1-3
3 So when we could stand it no longer, we thought it best to be left by ourselves in Athens. 2 We sent Timothy, who is our brother and co-worker in God’s service in spreading the gospel of Christ, to strengthen and encourage you in your faith, 3 so that no one would be unsettled by these trials. For you know quite well that we are destined for them.
“Some think that troubles are always caused by sin or a lack of faith. Trials may be a part of God’s plan for believers. Experiencing problems and persecutions can build character (James 1:2-4), perseverance (Romans 5:3-5), and sensitivity toward others who also face trouble (2 Corinthians 1:3-7). Problems are unavoidable for God’s people. Your troubles may be a sign of effective Christian living.” (Life Application Study Bible 2017)
Life Application Study Bible. Zondervan, 2011. p. 2017.