Matthew 6:19-22

Lay not up for yourselves treasures upon the earth, where moth and rust consume, and where thieves break through and steal: but lay up for yourselves treasures in heaven, where neither moth nor rust doth consume, and where thieves do not break through nor steal: for where thy treasure is, there will thy heart be also. The lamp of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light.