Does Augustine often join together Ex 3, 14 with Ex 3,15? Studies on Augustinian exegesis in Ex 3, 14-15

According to knowledgeable authors, Augustine often, or nearly always,joins together verses 14 and 15 of Ex 3 : Ego sum qui sum, the unique Name of God, and Deus Abraham, the name of God in the history of salvation of man. We wanted to verify this affirmation by compiling the citations of Ex 3, 14 and 15 in the entire works of Augustine, 1 task which has never been done. The results Of our study show that Augustine rarely cites together verses 14 and 15 of Ex 3: in the 31 sermons and the 11 books mentioning Ex 3, 14, a link is made with Ex 3, 15 in only 11 sermons and one book. Although Augustine frequently associates Ex 3, 14 with the God of the history of salvation, be does so mostly by ways of scriptural verses other than Ex 3, 15.