Charles Spurgeon Commentary Matthew 6:22

"The lamp of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light." — Matthew 6:22 (ASV)

The light of the body is the eye: if therefore thine eye be single,

If your motive is single—if you have only one motive, and that a right one—the chief one of glorifying God—if your eye is single.