Can you imagine what it would be like watching your friends, family, and many others burn to death? The feelings that come with that thought are almost indescribable. But that exactly what Alma and Amulek witnessed and experienced. Now think of not only witnessing that but having the faith to recognize that everything would be alright that those who perished were in the hands of their Father and that it was His will.
Alma and Amulek had the power of God within them and could have stopped the innocent from burning but Alma was so in-tune with the spirit that he knew he mustn't stop what was happening. When Amulek could no longer look upon this destruction he says to Alma, "How can we witness this awful scene? Therefore let us stretch forth our hands, and exercise the ^apower of God which is in us, and save them from the flames. But Alma said unto him: The Spirit constraineth me that I must not stretch forth mine hand; for behold the Lord receiveth them up unto himself, in ^aglory; and he doth suffer that they may do this thing, or that the people may do this thing unto them, according to the hardness of their hearts, that the ^bjudgments which he shall exercise upon them in his wrath may be just; and the ^cblood of the ^dinnocent shall stand as a witness against them, yea, and cry mightily against them at the last day" (Alma 14:10-11).
God has a plan. We have a choice. Each choice has a consequence and we will be and are held accountable for each choice we make. Though things may not seem fair or right, God knows what He is doing and we just need to strengthen our faith and trust in Him to be able to say "Be it according to the will of the Lord" (Alma 14:13).
Our Father in Heaven loves us so very much and He will do nothing except it be for our good. I love my Father. Though I may not understand all things I know He does and I know that that is all that matters. I just need to keep learning, keep growing, keep trusting in Him, and doing all that I can to get back to Him then He will help with the rest.