“O LORD, thou hast searched me, and known me. Thou knowest my downsitting and mine uprising, thou understandest my thought afar off.”
Psalm 139:1, 2
David understood that there was nothing about himself that God did not know. God knew when His servant sat down and when He rose up, and He knew every thought of his mind. Not only did God know David thoroughly, He knows every individual in the same way. He knows everything there is to know about everything, everyone, and every place. God has perfect and complete knowledge. God knows us better than we know ourselves. Nothing has ever occurred that God did not know about. As a matter of fact, He knew it would happen thousands of years before it ever happened, and it happened exactly as He knew it would happen.
God is omniscient. Because of His omniscience, we can certainly trust God. We can have confidence that He knows what we do not know; He knows what is best, He is aware of everything in the future and knows how every decision of ours will affect us years from now. Jesus directed His disciples to sail across a lake. As they sailed, He went to sleep. Before reaching the other side, they found themselves in a frightful storm. Terrified, the disciples cried out to Jesus, “Master, we perish” (Luke 8:24). They forgot one simple fact. Their omniscient Savior knew they would go into a storm. If Jesus told them to go to the other side of the lake, then they could be assured they would not perish.
We sometimes forget that God knows everything. He knows everything about the past, the present, and the future. He knows when every sparrow falls, and He knows how many hairs there are on our heads. Because of His omniscience, we certainly cannot fool Him. It is unwise to think that we can deceive the Lord. We might deceive ourselves and even fool others, but God is omniscient. In the New Testament, Jesus refused to commit Himself to certain men because the Bible says that He “needed not that any should testify of man: for he knew what was in man” (John 2:25). Jesus warned Peter that he would deny the Lord, but Peter refused to believe that it was possible. What Jesus said of Peter was true. He has infinite knowledge. We can believe and obey Him confidently, convinced that He knows all things perfectly.