2 Nephi 2:13

And if ye shall say there is no law, ye shall also say there is no sin. If ye shall say there is no sin, ye shall also say there is no righteousness.—And if there be no righteousness, there be no happiness. And if there be no righteousness nor happiness, there be no punishment nor misery. And if these things are not, there is no God. And if there is no God, we are not, neither the earth: for there could have been no creation of things, neither to act nor to be acted upon; wherefore, all things must have vanished away.

If you say there is no law, you also say there is no sin. If you say there is no sin, you also say there is no right way to live. If there is no right way to live, there is no happiness. If there is no right way to live or happiness, there is no punishment or sadness. If these things are not real, there is no God. If there is no God, we don’t exist. The earth doesn’t exist. Nothing could have been created. Nothing could act or be acted on. Everything would disappear.

If you say there’s no law, you’re also saying there’s no sin. If there’s no sin, there’s no righteousness. If there’s no righteousness, there’s no happiness. If there’s no righteousness or happiness, there’s no punishment or misery. And if none of these things exist, there’s no God. If there’s no God, we don’t exist either—neither us nor the earth. Nothing could have been created, nothing to act and nothing to be acted upon. Everything would have vanished.