Isa. xliii. 25 [LXX.]. St. Ambrose, taking the Septuagint reading, makes the contrast to be between man’s remembering and God’s forgetting. But the contrast in the Hebrew is different: God will do away sins of His pure mercy and challenges Israel to bring forward any merits which can plead for pardon. God shows that His mercy is even greater than His justice. St. Ambrose, as is shown more clearly in chap. vi., is merely using a verbal antithesis.