What does the Bible say about God testing our hearts?

Scripture provides the imagery of gold and silver being refined by fire as a metaphor for how God works in the lives of His people. Proverbs 17:3 states that while the fanning pot is for silver and the furnace for gold, the Lord tries the hearts. This indicates that God's examination of our hearts aims to produce purity and value, akin to how precious metals are perfected through heat. Zechariah 13:9 reinforces this, describing a purging process, asserting that those tried shall call upon God's name and He will acknowledge them as His people. God's trials are not arbitrary; they are purposeful and aim to strengthen our faith and dependency on Him.