Alma bears witness to the principle of faithful obedience. This reference is to the incident where the Israelites are tormented by serpents in the wilderness:
Therefore the people came to Moses, and said, We have sinned, for we have spoken against the LORD, and against thee; pray unto the LORD, that he take away the serpents from us. And Moses prayed for the people.
And the LORD said unto Moses, Make thee a fiery serpent, and set it upon a pole: and it shall come to pass, that every one that is bitten, when he looketh upon it, shall live.
And Moses made a serpent of brass, and put it upon a pole, and it came to pass, that if a serpent had bitten any man, when he beheld the serpent of brass, he lived. (Numbers 21:7–9; compare 1 Nephi 17:41; 2 Nephi 25:20)
The elevated serpent was a type of Christ—and a reminder to focus in faith on the redeeming power of the Savior. We must seek to become immediately, exactly, and courageously obedient to receive the promised blessings.