What does it mean that God knows all things?

The assertion that God knows all things illustrates God's omniscience, indicating that His understanding is not limited by time or space. This means He comprehensively perceives all events, both past and future, and knows every thought and action of His creatures (Psalm 139:2). God's knowledge is not merely passive; it is active and inherent to His nature, making Him aware of every detail in the universe, including the motivations behind human actions. This perfect knowledge ensures that His governance is just, as He sees every heart and every secret thought.