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]

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

^ ^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.

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[Pastor-1] 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.

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