Cyprian

"And if you will not believe, neither will you understand." Also the Lord in the Gospel: "For if you believe not that I am he, you shall die in your sins." Moreover, righteousness should subsist by faith. In it was life, as predicted in Habakkuk: "Now the just shall live by faith in me." Hence Abraham, the father of the nations, believed. …

Treatise XII. Three Books of Testimonies Against the Jews 12:1.5 ↗

Augustine of Hippo

Those just people also were saved by their salutary faith in him as man and God who, before he came in the flesh, believed that he was to come in the flesh. Our faith is the same as theirs, since they believed that this would be, while we believe that it has come to pass. …

Letter 190 ↗

Bonaventure

It should be noted that the Church was placed in paradise, like the first man, "to till it," in such a way that no one would say "that anything he possessed" was "his own." For it began in a state of great perfection that is observed today in the religious life, for the love of Christ was still recent, and in those days "a large number also of the priests accepted the faith." This Church, meaning the one that began with the Jews, because they were converted at one time by the three thousand, and at another, by the five thousand, …

Collations on the Hexaemeron, Collation 16 ↗