Wilford Woodruff designates "O My Father" a "Revelation."
Wilford Woodruff, "Discourse," Millennial Star 56 no. 15, April 9, 1894, 229
With regard to our position before we came here, I will say that we dwelt with the Father and with the Son, as expressed in the hymn, "O my Father," that has been sung here. That hymn is a revelation, though it was given unto us by a woman—Sister Snow. There are a great many sisters who have the spirit of revelation. There is no reason why they should not be inspired as well as men. We dwelt in the presence of God before we came here, and we have been sent here upon a mission, and I do not want to live any longer myself than I can magnify that calling. What benefit is it to any man who dwell here and to miss the object for which he was sent, even eternal life?