[Abraham H. Cannon]
The question was asked if Temple work could be done for people who were once in the Church, but gradually grew cold and moved away. The answer was "Yes." This, of course, when they have not sinned against light and truth. By special permission of the President cases have even occurred of living wives who are in the Church being sealed to their husbands who died out of the Church. The question of forgiveness for the sin of adultery was considered at some length, and examples were given of the views entertained by the various Presidents who have led the Church. All consider it a most grievous sin, but the strictness with which the law of excommunication has been enforced has varied. There seems to be more leniency in this regard at present, and some of the brethren seem to feel that this laxity is doing injury among the people by causing them to look upon this sin as being of no very grave import. Bro. Snow said he expected to see the day when a man's blood will be shed for the crime of adultery.
[Abraham H. Cannon Journal Excerpts, http://www.amazon.com/Apostles-Record-Journals-Abraham-1889-1896/dp/B000MFD1K4]