9. And the Lord said unto Moses. This seems to be a representation of the reason why Moses was so angry; viz., because he had been forewarned that he had to do with a lost and desperate man. When, therefore, after so many contests, he sees the dominion of God despised by the audacity and madness of the tyrant, deeper indignation bursts from him in their last struggle; especially because he sees before his eyes that detestable prodigy, viz., an earthen vessel so bold as to provoke God with indomitable obstinacy. But God had foretold to Moses (as we have already seen) the end of this his exceeding stubbornness, lest, having so often suffered repulse, he should faint at length. Otherwise, there might have crept in no trifling temptation, as to how it could please God to contend in vain with a mortal man. And it was absurd that the hardness of a human heart could not be either subdued, or corrected, or broken by the divine power. God, therefore, asserts that He was thus designing His own glory, which he desired to manifest by various miracles; and on this account he adds again in the next verse, that Pharaoh’s heart was again hardened by God Himself; whereby he signifies, that the tyrant thus pertinaciously resisted, not without the knowledge and will of God, in order that the deliverance might be more wonderful.