Matthew 6:20-23

But store your treasures in heaven where they cannot be destroyed by moths or rust and where thieves cannot break in and steal them. Your heart will be where your treasure is. “The eye is a light for the body. If your eyes are good, your whole body will be full of light. But if your eyes are evil, your whole body will be full of darkness. And if the only light you have is really darkness, then you have the worst darkness.