SINGLENESS OF EYE

"The light of the body is the eye:
if therefore thine eye be single,
thy whole body shall be full of light.”
Matthew 6:22
(New American Standard Bible)

Having singleness of eye means to have supreme love for Jesus Christ. The focus of the eye is solely and supremely to fear, honor, please, and glorify God. The light that illuminates the body comes from the word of God, which is knowledge and truth. The word of God teaches us how to please and glorify God. Psalm 36:9 says, “For with thee is the fountain of life: in thy light shall we see light.” The eye is this passage refers to the ‘eyes of the mind’ or the ‘faculty of knowing.’ Jesus goes on to teach that the eye must be single, or clear, because ‘no one can serve two masters’ (Matthew 6:24). Singleness of eye, or focus, will result in the entire body being full of illumination and revelation. But, if the ‘eye of the mind’ is double or evil, it “shuts out the light and plunges you into darkness. If the light you think you have is really darkness, how deep that darkness will be!”
In the natural, this is a disorder called Binocular Diplopia, or double vision. If the two eyes are misaligned and aim at different targets, two non-matching images will be sent to the viewer's brain. When the brain accepts and uses two non-matching images at the same time, double vision results. Double vision is dangerous to survival, so, the brain naturally guards against its occurrence. In an attempt to avoid double vision, the brain will eventually disregard one of the mismatching images. That is, the brain will ignore one eye. Due to the brain's ability to suppress one eye, a person's double vision can appear to go away without medical evaluation or treatment. Bear in mind that the causes of the double vision are very likely still present and that loss of vision in one eye has probably occurred due to lack of treatment. When vision in one eye is lost, the person has also lost normal depth perception and stereo vision. (From Optometrists Network)
Spiritually, when a person has divided interests, or is double-minded/hearted and chooses to block out the light of God’s word, it causes deception and lack of discernment. A double-minded person is one who has divided interests, is wavering, uncertain, and doubting. The bible says this type person should not expect to receive anything from the Lord (James 1:8). It is impossible to please God and the world. The bible says you will hold to one and despise the other (Luke 16:13). Singleness of eye requires the fear of the Lord and total consecration to Him. Through the word of God, the single eye, or the faculty of knowing, will be correctly instructed In all that is essential for it to know and do to be pleasing to God.