And the Lord said. Rather, "had said." God had forewarned Moses that Pharaoh's heart would be hardened (Exodus 4:21; Exodus 7:3), and that, in spite of all the miracles which he was empowered to perform before him, he would not let the people go (Exodus 3:19; Exodus 4:21). It was not until God took Pharaoh's punishment altogether into his own hands, and himself came down and smote all the first-born, that the king's obstinacy was overcome, and he proceeded to "thrust the people out." That my wonders may be multiplied. Compare Exodus 3:20; Exodus 7:3. If Pharaoh had yielded at the first, or even after two or three miracles, God's greatness and power would not have been shown forth very remarkably. Neither the Egyptians nor the neighbouring nations would have been much impressed. The circumstances would soon have been forgotten. As it was, the hardness of Pharaoh's heart, while it delayed the departure of the Israelites for a year, and so added to their sufferings, was of advantage to them in various ways:—
1. It gave them time to organise them elves, and make all necessary preparations for a sudden departure.
2. It deeply impressed the Egyptians, and led them to abstain from all interference with the Israelites for above three centuries.
3. It impressed the neighbouring nations also to.some extent, and either prevented them from offering opposition to the Israelites, or made them contend with less heart, and so with less success against them.