One of the classes of the Powers of Heaven, seraphim dwell in everlasting burnings. They are the glorious ones in flames of glory (see T&C 123:22).1 The Hebrew verb śārāph means “to burn” and may be applied to their extraordinary brightness and fiery appearance. Seraphim are the burning, fiery ones, and the word literally means “fiery snakes or serpents.” A number of biblical verses associate seraphim with snakes or serpents. The Lord sent fiery serpents [seraphim] among the people and ordered Moses to make a fiery serpent [saraph] and set it upon a pole (Numbers 10:7). Seraphim are described as Heavenly beings that stand above the throne of God, proclaiming holiness, and who are able to minister to mortals (see Isaiah 2:1–2).
1 Preserving the Restoration, 176.