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.
Luke 11:34-36
The lamp of thy body is thine eye: when thine eye is single, thy whole body also is full of light; but when it is evil, thy body also is full of darkness.
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 the purity that is toward Christ.
Colossians 3:22
Servants, obey in all things them that are 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 day by day, continuing stedfastly with one accord in the temple, and breaking bread at home, they took their food with gladness and singleness of heart,
Ephesians 6:5
Servants, be obedient unto them that according to the flesh are your masters, with fear and trembling, in singleness of your heart, as unto Christ;