"...when thine eye is single, thy whole body also is full of light;" (Luke 11:34)

"And if your eye be single to my glory, your whole bodies shall be filled with light, and there shall be no darkness in you; and that body which is filled with light comprehendeth all things.   Therefore, sanctify yourselves that your minds become single to God, and the days will come that you shall see him; for he will unveil his face unto you, and it shall be in his own time, and in his own way, and according to his own will.  Remember the great and last promise which I have made unto you; cast away your idle thoughts and your excess of laughter far from you." (D&C 88:67-69)