You and I don't just have a mind and a body; we also have a soul or spirit -- and because of that, we yearn to know God. Animals don't have this yearning -- but we do, because God has implanted within our souls a longing for Himself. The psalmist put it this way: "My soul thirsts for God, for the living God" (Psalm 42:2).
I recall being in the old Soviet Union some years ago. We were visiting one of their most famous research institutions, and I was invited to discuss religion with one of their leading anthropologists, a professed atheist. I asked him if he'd ever discovered a group of people anywhere in the world who didn't have some kind of religious belief. He admitted that he hadn't -- and I told him that this was one reason why I believed in God. If God doesn't exist, I asked, why do so many people seek Him? He admitted he didn't have an answer to this.
Yes, God exists -- but so does evil, and so does Satan. If you were Satan, wouldn't you do everything in your power to confuse people and keep them from the one true God? And this is exactly what he does. The Bible warns us not to be like those who "exchanged the truth of God for a lie, and worshipped and served created things rather than the Creator" (Romans 1:25).
Do you want to know what God is like? Look at Jesus Christ, for He alone was God in human flesh, sent from heaven to take away our sins and bring us back to God. Open your heart to Him today.