Revelation 14:3

² “During the time of the First and Second Temples, a number of the Levites played on two types of harps, singing arcane melodies that no one else was permitted to learn. This knowledge was passed from father to son, until the destruction of the Second Temple.”—Randall Price, The Coming Last Days Temple (Eugene, OR: Harvest House Publishers, 1999), 390.

³ E. W. Bullinger, Commentary On Revelation (Grand Rapids, MI: Kregel Publications, 1984, 1935), Rev. 14:3.