Alma has drawn allusions from historical covenant group salvation by the power of the Lord and now is alluding to individual covenant salvation. In fact it is his intention to inspire a personal covenant renewal. He declares:
I say unto you, can you imagine to yourselves that ye hear the voice of the Lord, saying unto you, in that day: Come unto me ye blessed, for behold, your [covenant] works have been the works of righteousness upon the face of the earth?
It is not enough for covenant people just to believe, for Alma specifically points to the fact that the Lord will know them by their "works." [Alan C. Miner, Personal Notes] [For more on the covenant ceremonial background of Alma 5 see Hugh Nibley's commentary on the content of Alma 5]