This document summarizes several Bible passages about God's justice. It discusses how God will repay with tribulation those who trouble believers and take vengeance on those who do not know or obey God. It also describes how God did not spare sinning angels, the ancient world, or Sodom and Gomorrah, but delivered righteous people like Noah and Lot. The document encourages believers to be diligent as they wait for Christ's return and to persevere in following the Gospel through which God called them.