Authors:

Heaven open'd wide Her ever during gates, harmonious sound, On golden hinges moving.

John Milton, Henry John Todd (1852). “The Poetical Works of John Milton: With Notes of Various Authors; and with Some Account of the Life and Writings of Milton, Derived Principally from Original Documents in Her Majesty's State-paper Office”, p.332
Heaven open'd wide Her ever during gates, harmonious sound, On golden hinges moving.