text:  And the last promise which she had entreated on this evening from both was--that in either of two contingencies they would review her counsels and the passages to which she pointed their attention in the Scriptures; namely first in the event of any calamity that for one sister or for both should overspread their paths with total darkness; and secondly in the event of life flowing in too profound a stream of prosperity so as to threaten them with an alienation of interest from all spiritual objects