Matthew 6:22
The lamp of the body is the eye: if therefore thine eye is sincere, thy whole body shall be full of light.
Luke 11:34-36
The lamp of the body is the eye; therefore when thine eye is sincere, thy whole body also is full of light; but when thine eye is evil, thy body also is full of darkness.
2 Corinthians 11:3
But I fear that as the serpent deceived Eve through his craftiness, so your senses should be corrupted in some way, and ye should fall from the simplicity that is in the Christ.
Colossians 3:22
Slaves, in all things hearken unto your masters according to the flesh, not serving to be seen as those who only please men, but in simplicity of heart, fearing God;
Acts 2:46
And they, continuing daily with one accord in the temple and breaking bread from house to house, they ate their food together with gladness and singleness of heart,
Ephesians 6:5
Slaves, be obedient to those that are your masters according to the flesh, with fear and trembling, in simplicity of your heart as unto the Christ,