Cross reference
Matthew 6:22
22 `The lamp of the body is the eye, if, therefore, thine eye may be perfect, all thy body shall be enlightened,
Luke 11:34-36
34 `The lamp of the body is the eye, when then thine eye may be simple, thy whole body also is lightened; and when it may be evil, thy body also is darkened;
35 take heed, then, lest the light that `is' in thee be darkness;
36 if then thy whole body is lightened, not having any part darkened, the whole shall be lightened, as when the lamp by the brightness may give thee light.'
2 Corinthians 11:3
3 and I fear, lest, as the serpent did beguile Eve in his subtilty, so your minds may be corrupted from the simplicity that `is' in the Christ;