What does the Bible say about great sin?

The Bible identifies great sin as a serious catalyst for distress in the life of believers. In 2 Samuel 24, David's census of Israel was deemed a great sin because it reflected a lack of trust in God's promises. Even a great man like David, described as ‘a man after God's own heart,’ fell into sin, demonstrating that no one is exempt from sinfulness, regardless of their status in faith. The Scriptures emphasize that sin is inevitable and serves as a reminder of our dependence on God's grace and mercy.