31. And the Lord did according to the word of Moses. “The word” here may be expounded either of the answer, or the prayer, of Moses. The former pleases me best, viz., that by the result God proved that He ratified what Moses had said, whom He had made the proclaimer of His judgment; but if any one prefer to refer it to his prayer, let him retain his opinion. When he adds that the “heart of the king was hardened at this time also,” he aggravates the crime of his obstinacy, since there was no bound to his rebellion under such a series of punishments, by which even an iron heart should have been corrected.