Seek Spiritual Guidance

Captain Moroni was looking for guidance, trying to track the moves of his enemies in order to know how to defend himself. This sort of intelligence in wartime is crucial to the success of an army. Knowing how to defend ourselves from the adversary of our souls is crucial to our success as well. Notice the two things Moroni did to gain this valuable intelligence:

23 But it came to pass, as soon as they had departed into the wilderness Moroni sent spies into the wilderness to watch their camp; and Moroni, also, knowing of the prophecies of Alma, sent certain men unto him, desiring him that he should inquire of the Lord whither the armies of the Nephites should go to defend themselves against the Lamanites.
24 And it came to pass that the word of the Lord came unto Alma, and Alma informed the messengers of Moroni, that the armies of the Lamanites were marching round about in the wilderness, that they might come over into the land of Manti, that they might commence an attack upon the weaker part of the people. And those messengers went and delivered the message unto Moroni (Alma 43).

He did what he could to gather the intelligence he needed by sending spies. He also sought Heavenly wisdom and direction. His purpose was to know the intentions of his enemy so that he could employ the appropriate defense strategy.

I feel that this teaches me a valuable lesson, namely that I have the privilege of seeking heavenly guidance on how to defend myself against Satan's attacks. The Lord can teach me what tactics I may employ to successfully wage the war with the enemy of my soul.

The effect of Moroni's intelligence-gathering efforts was that he was prepared to meet his adversary. Not only that but he was able to take an advantageous position on them.

Another lesson I see which comes from verse 24 above, is that I can know without doubt that Satan will try to attack me at the weakest parts of my character. If he can't get me to sin upfront, then he will go around and test every weakness in my spiritual armor. He will try to make a breach where my defenses are least robust and that will allow him to wreak havoc on the rest of me. Therefore, it behooves me to work on strengthening every weakness. Every character flaw needs to be fixed, one by one, so that Satan may find no success in compromising my soul.