Matthew 6:20-22

20 Instead, you should want to have valuable things in heaven. Insects and water cannot destroy anything there. Men cannot rob you of your things there. 21 Then you will be thinking a lot about heaven, because that is where you keep your valuable things.

22 Your eyes are like lamps and your body is like a room. Make sure that your eyes are like a clean lamp, then your whole body will have light.