But if your eye is evil,a your whole body will be full of darkness. If then the light that is in you is darkness, how great is the darkness! Bible
The “evil eye” is a stingy, greedy, covetous, envious eye, not, as popularly taught, an eye that brings evil.

“But if your eye is evil, your whole body will be full of darkness” The “evil eye” is a Semitic idiom for being greedy, stingy and selfish. In contrast to the “evil eye,” which is greedy, stingy, selfish, the “good eye,” or a “single eye,” is generous. This statement of Jesus is a serious warning to people who are stingy and greedy. It may be hard for a greedy, selfish person to change, but it can be done, and it will yield great reward. [For more on idioms involving the good eye, see commentary on Prov. 22:9. For more on the idiom of the evil eye, see commentary on Prov. 28:22].

Commentary for: Matthew 6:23