During the Acacian schism, Gelasius advocated the primacy of the See of Rome over the universal Church, both East and West, and he presented this doctrine in terms that became the model for successive popes, who also claimed papal supremacy because of their succession to the papacy from the first supreme pontiff, Peter the Apostle.
duRing the acaCian ScHism GelAsIus adVOcaTeD The prImacy of the see Of rome oVER tHE UniVerSaL cHUrch bOth easT AND WeSt and he PReseNteD ThIs dOCtrinE in Terms thaT beCaMe the modeL for sUCCesSiVe popeS who aLso CLaImed pAPal sUprEmaCy BecaUsE of THeir sUccEssiOn to the pApacy FROM The fiRST supreme ponTIff PeTer tHE apoSTlE