Verily, verily, I say unto you, ye must watch and pray always, lest ye be tempted by the devil, and ye be led away captive by him.
--3 Nephi 18:15
Behold, verily, verily, I say unto you, ye must watch and pray always lest ye enter into temptation; for Satan desireth to have you, that he may sift you as wheat.
--3 Nephi 18:18
Repetition in scripture indicates significance and emphasis. The Savior used these exact words twice in this brief sermon on prayer. He did not want the lesson lost.
Watching and praying are of vital importance to my spiritual welfare. They are like air and water.
For what must I watch? Temptation—the sly, insidious, almost imperceptible invitations to stray from the Lord's way, the covenant path. The Big 10 are not Satan's weapons. I'm highly unlikely to commit murder, rob a bank, or perjure myself in court. To quote Joseph Smith, "A disposition to commit such was never in my nature" (Pearl of Great Price, Joseph Smith History 1:28).
A million little things can rack up a big score, however. I must watch for the small sins—often not so much what I do but what I don't do. Despite the Savior's injunction to "watch", I become easily lulled into complacency and inattention. I simply forget to watch.
And so, the second injunction to "pray always." Knowing I would fail to watch perfectly, Jesus directs me to bolster my faulty watching with prayer. When I watch, I put the onus on myself to be aware of the temptations that beset me and to avoid them. When I pray, however, I put the onus (and my faith) on God to help me, to watch for me, and to steer me clear of the obstacles my enemy puts in my path. Between my feeble attempts and God's immense power, there is hope for me.
One more thought: Note the scripture does not say "pray regularly" or "pray daily". It says to "pray always". How do I pray always if I cannot watch always? Given my one-track mind, how do I focus on watching and praying continually while I must also give my attention to the things of daily life, particularly the mental activities like writing? Should I lock myself in a monastic cell and shut the door to all outside distractions? I could watch and pray always, but I wouldn't be of much use to anyone.
Though we usually think of the word "always" in its primary sense of "at all times and on all occasions," it has a second meaning: "as a last resort." For instance, if you can't get your car to start, you can always call a tow truck. Is that the meaning of "prayer always?" If I have done all I can to watch myself and keep myself out of trouble, is prayer my last resort? Is prayer my last hope? Isn't prayer really my only hope? Isn't faith in Christ and repentance my one true hope?