Authors:

Let none henceforth seek needless cause to approve The faith they owe; when earnestly they seek Such proof, conclude, they then begin to fail.

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.391
Let none henceforth seek needless cause to approve The faith they owe; when earnestly they seek Such proof, conclude, they then begin to fail.