Presumably, gdemetz, the end result of baptism is supposedly the same within Mormonism.....a necessary requirement for salvation and the add on of exaltation not matter it is done fore the living or by proxy for a dead person. Now in your failure to address the Book of Mormon quote you are suggesting that there are two baptisms and that somehow, while recognizing the difference between a living person and a dead one, their baptism has different results. The Mosiah quote clearly suggests that the baptism being performed is for a life long action only and thus, by extension, negates a need to baptize for the dead since they are obvioulsy beyond life. You did no better on this one than I expected.
Is that a camel in your throat?
When Alma stressed for as long as you live
he is paraphrasing the familiar admonition to endure to the end.
7 Thus came the voice of the Lord unto me, saying: All who have died without a knowledge of this gospel, who would have received it if they had been permitted to tarry, shall be heirs of the celestial kingdom of God;
8 Also all that shall die henceforth without a knowledge of it, who would have received it with all their hearts, shall be heirs of that kingdom;
9 For I, the Lord, will judge all men according to their works, according to the desire of their hearts.
In this scripture the concept of receiving it with all their hearts
is the same sentiment.
Only those who embrace the gospel with all their hearts will endure to the end of their lives.
So it the same concept on either side of the veil.