(Exodus, Ibid.) "working wonders": It is not written "worked wonders," but "working wonders" — in time to come, viz. (Jeremiah 16:14) "Therefore, behold, days are coming, says the L–rd, when it will no more be said 'As the L–rd lives, who brought up the children of Israel from the land of Egypt,' but etc."
Who Brought Up the Children of Israel from the Land of Egypt
Mekhilta Tractate Shirah 8:20