A Single Eye
What does the Lord mean when he says: “And if your eye be single to my glory, your whole bodies shall be filled with light…” (D&C 88:67)? The ability to singularly focus distinguishes the difference between those who have the spirit and are happy and those who do not. You wouldn’t think of checking your e-mail during your personal prayers, yet what’s the difference when you allow the mundane things of the world to occupy your mind during church?