The Collective Letter of the Spanish Bishops, 1937, was a pastoral letter written by Spanish bishops that justified Franco's uprising which precipitated the Spanish Civil War. Franco presented himself to world opinion as the defender of the Church. He was displeased at criticism levelled against him by some European Catholics who condemned the murders of priests in the Republican zone, along with those of workers and peasants in the nationalist zone. Nearly all Spanish bishops had spoken publicly in favour of the insurrection, but this was insufficient for Franco. On 10 May 1937, he asked Isidro Goma y Tomas to promulgate "a text, addressed to bishops the world over with a request that it be published by the Catholic press everywhere, which would set out truth clearly and in proper perspective" (letter, Goma to Eugenio Pacelli, 12 May 1937). Goma immediately set to work on a statement aimed at international Catholic opinion. [1] : Chapter Six
The letter carried the date 1 July 1937, but was not made available to a wide public until August to allow time to obtain the signatures of a small number of bishops who withheld their signature, and also to ensure that bishops all over the world, to whom the letter was addressed, received it before the press.
The letter was edited by Goma with edits by Enrique Pla y Deniel, Bishop of Salamanca, and additions from Eijo Garay, Bishop of Madrid-Alcala. The letter called the Civil War an "armed plebiscite" and discussed the conflict's meaning – its description of the killings of priests and nuns, "was to have the strongest impact upon the recipients". Goma gave enthusiastic support to Franco – though he warned against the danger of Nazi influence – "the effect on the State of a foreign ideology which tends to draw us away from Christian ideas and influences, will create enormous problems when grafting a new Spain".
Forty-three bishops and five chapterhouse vicars signed the letter. Five bishops did not sign the letter – though they were not equally significant.
Alvarez Bolado, a writer on the religious factor in the Civil War, highlighted four limitations of the letter ;