According to John Thompson, the structure and themes of Jacob's covenant speech show that he probably spoke in connection with a religious royal festival, to which the words of Isaiah which he quoted were especially well suited. One clue comes from the Babylonian Talmud. According to the Talmud, speaking the sacred name of God was allowed only on the Day of Atonement and even then only by the high priest in the Holy of Holies. It is difficult to determine the basis for this tradition; however, it may have arisen from earlier associations of the secret name of God with creation or from other ancient traditions concerning the secrecy of names. Regardless, it is interesting that Jacob begins his sermon by stating: "And I speak unto you for your sakes, that ye may learn and glorify the name of your God" (2 Nephi 6:4). Further, the rest of his sermon contains numerous references to the "name" of God. For example, in 2 Nephi 8:15 (parallel to Isaiah 51:15) we find, "the Lord of Hosts is my name." For other examples, see 2 Nephi 9:23; 9:24; 9:41; 9:49; 9:52; 10:3. [John S. Thompson, "Isaiah 50-51, the Israelite Autumn Festivals, and the Covenant Speech of Jacob in 2 Nephi 6-10," in Isaiah in the Book of Mormon, p. 132] [For a complete listing of the different descriptive titles of the Lord, see Volume 1, Appendix B]