And Moses turned, and went down from the mount, and the two tables of the testimony were in his hand: the tables were written on both their sides; on the one side and on the other were they written.
All Commentaries on Exodus 32:15 Go To Exodus 32
Augustine of Hippo
AD 430
For if we should designate a number which signifies the law, what will it be except ten? For indeed we hold it as most certain that the Decalogue of the law, that is, those very well known ten commandments, were first written by the finger of God on two stone tablets. But the law, when grace gives no aid, makes transgressors and exists only in the letter. For because of this especially the apostle says, “The letter kills, but the spirit gives life.” Therefore let the spirit be added to the letter so that the letter may not kill him to whom the spirit does not give life, but that we may practice the commandments, not by our own strength but by the gift of the Savior.
