You have searched me, Lord, and you know me. You know when I sit and when I rise; you perceive my thoughts from afar. You discern my going out and my lying down; you are familiar with all my ways. Before a word is on my tongue you, Lord, know it completely. You hem me in behind and before, and you lay your hand upon me. Such knowledge is too wonderful for me, too lofty for me to attain. Psalm 139:1-6 NIV
Living with constant awareness of God’s omniscience is a key element to the Christian walk. The fact that the Lord knows everything about us—down to the smallest detail—should both comfort us and motivate us to live pure and righteous lives. It should also convict us greatly. Before we speak an untruth, dwell on an impure thought, or commit a sinful act, our awareness that God knows about it may deter us from sin.
Do not be deceived into thinking you can sin and get away with it. Even when no other human being is watching, God is. His all-seeing eye catches everything we do, and we are fully accountable to Him. Remember Achan (Joshua 7), who thought no one would know when he disobeyed God by taking a portion of Jericho’s spoil. No human eyes witnessed his treacherous deed, but the Lord saw him, and Achan paid for his sin with his life.
On the other hand, God’s omniscience should serve as a great source of comfort. Nothing that happens to us escapes God’s attention. He is fully aware of every trouble, trial, and threat we face. He is constantly watching over us, guarding and protecting us at all times. We can rest peacefully and walk fearlessly through life knowing that His loving, careful eye is always on us.