'Eye Is The Lamp' in the Bible

“The eye is the lamp of the body; so if your eye is clear [spiritually perceptive], your whole body will be full of light [benefiting from God’s precepts].

The eye is the lamp of your body. When your eye is clear [spiritually perceptive, focused on God], your whole body also is full of light [benefiting from God’s precepts]. But when it is bad [spiritually blind], your body also is full of darkness [devoid of God’s word].