Matthew 6:22
"The lamp of the body is the eye. If, therefore, your eye be sound, your whole body will be full of light;
Luke 11:34-36
The lamp of your body is your eye. When your eye is sound, your whole body also is full of light; but, when it is evil, your body also is dark.
2 Corinthians 11:3
but I fear lest, by any means, as the serpent beguiled Eve in his craftiness, your minds should be corrupted from the simplicity and purity which is toward Christ.
Colossians 3:22
Servants, obey in all things your masters according to the flesh; not with eye-service, as men-pleasers, but in singleness of heart, fearing the Lord.
Acts 2:46
And they, continuing daily with one accord in the temple, and breaking bread at their homes, were partaking of food in gladness and singleness of heart;
Ephesians 6:5
Servants, obey your masters according to the flesh, with fear and trembling, in singleness of your heart, as to Christ;