How do we know God's mercy is reliable?

The reliability of God's mercy is grounded in His unchangeable nature and promises as seen throughout Scripture. In 2 Peter 2:9, it assures us that 'the Lord knoweth how to deliver the godly out of temptations.' His historical deliverance of David from peril, including times when David found himself in deception and difficulty, exemplifies that God's mercy is steadfast, even when we falter. Furthermore, God's infinite wisdom ensures that He knows exactly how to deliver us from trials, making His mercy a dependable refuge for all believers.