Just as a refiner uses extreme heat to separate pure metal from impurities, God uses the trials and pressures of life to reveal and refine the true condition of the human heart. God does not need to test to gain knowledge — He already knows all. Rather, the testing reveals what is there, both to others and to ourselves. Nothing is hidden from God's sight.
Memory phrase: God tests the heart.
Talk about it: What does it mean that God tests our hearts?
Prayer: God, make my heart pure like refined gold.