What role did religion play in cortés's and columbus's explorations?

On January 5, 1502, prior to his fourth and final voyage to America, Columbus gathered several judges and notaries at his home in Seville to authenticate copies of original documents in which Queen Isabella and King Ferdinand had granted titles, revenues, powers, and privileges to him and his descendants. These thirty-six documents are popularly called Columbus’s "Book of Privileges." Four copies of his "Book" existed in 1502, including one now in Paris from which the elaborate facsimile shown here was made. This publication was one of a number of major documentary projects commemorating the 400th anniversary of the first Columbus voyage in 1892.

where are the statements?