What does the Bible say about God's knowledge of our sin?

In Psalm 139:4, David acknowledges that even before a word is on our tongue, God knows it completely. This means that God understands our flaws and sins better than we do ourselves. Acknowledging God's knowledge of our transgressions should lead us to confess and repent. Instead of hiding our sin, we realize that the One who knows us fully also loves us most deeply. God's omniscience does not condemn us but invites us to a relationship marked by grace as we bring our sins to Him for forgiveness and healing.