How do we know that God is all-knowing?

The omniscience of God is a fundamental attribute reaffirmed throughout the Scriptures, particularly in passages such as Psalm 139, which begins with the affirmation, 'O Lord, thou hast searched me and known me.' This knowledge encompasses not only our actions but also our innermost thoughts and intentions, as indicated in verses like 'Thou understandest my thought afar off.' The enormity of this divine knowledge reveals that nothing is hidden from God, and His all-encompassing awareness is both a comfort and a challenge to believers. Recognizing that God knows our thoughts and circumstances invites us to live transparently before Him and brings reassurance of His constant presence.