John Lee leaves for Salt Lake, where he will provide Young with a detailed account of the [Mountain Meadows] massacre. According to Lee, Young first expresses dismay and concern that the massacre will damage the LDS reputation. The next day, however, Young tells Lee, "I asked the Lord if it was all right for the deed to be done, to take away the vision of the deed from my mind, and the Lord did so, and I feel first rate. It is all right. The only fear I have is from traitors."
[Linder, Douglas, The Mountain Meadows Massacre Trials, http://www.law.umkc.edu/faculty/projects/FTRIALS/mountainmeadows/leechrono.html]