Cogimur jubente altissimo

Cogimur jubente altissimo is a papal bull issued by Pope Sixtus IV on 8 April 1481 calling for a crusade against the Ottoman Empire.[1]

Pope Sixtus IV

Sixtus granted indulgences to those who took part in the crusade and instituted a tithe to pay for it.[1] He also surrendered his own silver plate to fund the crusade.[1]

Notes

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  1. ^ a b c Ludwig Pastor, The History of the Popes from the Close of the Middle Ages, Volume IV (London: Kegan Paul, Trench, Trübner, & Co., 1894), p. 341.