And he said unto me: Behold there are save two churches only; the one is the church of the Lamb of God, and the other is the church of the devil; wherefore, whoso belongeth not to the church of the Lamb of God belongeth to that great church, which is the mother of abominations; and she is the whore of all the earth. (1 Nephi 14:10)
Let me tell you about a thought experiment I conducted in Gospel Doctrine class one time.
I drew a large circle on a white board at the front of the class. It was the first part of a Venn diagram, and I told the class that the space interior to the circle would be composed of individuals who belonged to the church of the Lamb of God and that the space outside the circle would be composed of individuals who belonged to the church of the devil.
We spent a few moments talking about what characteristics might be found in the individuals of each group, keeping in mind that the Lord looks on the heart of the individual and that, if we want to be able to “see” who constitutes each group, we have to see as the Lord sees. And then I offered a suggestion. I drew a second circle that partially overlapped the first one and labeled it, “The Church of Jesus Christ of Latter-day Saints,” and while facing the whiteboard, I suggested to the class that only part of the membership of the LDS church was actually to be found within the first circle and that there were many (if not, most) members who fell outside the circle.
I wish I could adequately describe the looks I saw on the faces of the people in the class that day as I turned around to face them. They looked totally lost. I’ve never before, nor since, seen so much collective cognitive dissonance at one time. It came as a great surprise to me, even though it shouldn’t have. To address it, I quickly said, “Ok, wait! Hear me out! I bet everyone knows at least one person who holds a temple recommend, whose heart is not right and who, clearly, isn’t worthy of it.” To that, the entire class responded with a collective nod and looks of understanding and agreement, as their minds quickly recalled someone in their life who met that criteria.
Then, a member of the class raised a hand and said, “You could probably do the same thing with any church,” to which, I responded, “That’s right!” and I turned back to the whiteboard and drew several more circles and labeled each of them with the name of another church.
I quickly made the point that other churches were probably similarly constituted and that there were, likely, individuals in other churches who had hearts that qualified them to be counted as members of the church of the Lamb of God.