In this paper I explore:
1) Luis de Guzmán and other possible Christians patrons of medieval translations of the Bible.
2) The invitation to Arragel and the proposed Jewish / Christian collaboration.
3) The consequences of the patronage for Arragel: Christian materials in his translations, Christian and Jewish passages in the glosses, possible Jewish traditions in the illuminations.
4) How Arragel’s work was considered by his patron.