E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Let the dead bury the dead. Let bygones be bygones. Dont rake up old and dead grievances.
Let me entreat you to let the dead bury the dead, to cast behind you every recollection of bygone evils, and to cherish, to love, to sustain one another through all the vicissitudes of human affairs in the times that are to come.Gladstone: Home Rule Bill (February 13th, 1893).