to be and to do

To be and to do are inseparable. As interdependent doctrines they reinforce and promote each other. Faith inspires one to pray, for example, and prayer in turn strengthens one’s faith. 

The Savior often denounced those who did without being—calling them hypocrites: “This people honoureth me with their lips, but their heart is far from me” (Mark 7:6). To do without to be is hypocrisy, or feigning to be what one is not—a pretender.

Conversely, to be without to do is void, as in “faith, if it hath not works, is dead, being alone” (James 2:17; emphasis added). Be without do really isn’t being—it is self-deception, believing oneself to be good merely because one’s intentions are good.

Do without be—hypocrisy—portrays a false image to others, while be without do portrays a false image to oneself. 

Lynn G. Robbins, "What Manner of Men and Women Ought Ye to Be?" April 2011 General Conference