Hugh Nibley
"The Nephites fittingly celebrated their victory, not with getting drunk, but with fasting and prayer (Alma 45:1). And yet it was at this happy time of deliverance that Alma warned the people, to whom he had been zealously preaching all this time, that in the end it would be the Nephites and not the Lamanites who would 'become extinct' (Alma 45:10-14)." (Since Cumorah, p. 301)