(3) I will harden Pharaoh's heart.--See the comment on Exodus 4:21.

My signs and my wonders.--"Signs" ('othoth) were miracles done as credentials, to prove a mission (Exodus 4:8-9; Exodus 4:30). "Wonders" (mophoth) were miracles generally; niphle'oth, also translated" wonders" (Exodus 3:20), were miracles, wrought in the way of punishment. These last are called also shophetiin, "judgments." (See Exodus 7:4.)

Verse 3. - I will harden Pharaoh's heart. See the comment on Exodus 4:21. And multiply my signs and my wonders. The idea of a long series of miracles is here, for the first time, distinctly introduced. Three signs had been given (Exodus 4:3-9); one further miracle had been mentioned (ib. 23). Now a multiplication of signs and wonders is promised. Compare Exodus 3:20, and Exodus 6:6, which, however, are not so explicit as the present passage.

7:1-7 God glorifies himself. He makes people know that he is Jehovah. Israel is made to know it by the performance of his promises to them, and the Egyptians by the pouring out of his wrath upon them. Moses, as the ambassador of Jehovah, speaking in his name, laid commands upon Pharaoh, denounced threatenings against him, and called for judgments upon him. Pharaoh, proud and great as he was, could not resist. Moses stood not in awe of Pharaoh, but made him tremble. This seems to be meant in the words, Thou shalt be a god unto Pharaoh. At length Moses is delivered from his fears. He makes no more objections, but, being strengthened in faith, goes about his work with courage, and proceeds in it with perseverance.And I will harden Pharaoh's heart,.... See Gill on Exodus 4:21.

and multiply my signs and my wonders in the land of Egypt; work one miracle and wonderful sign after another, until they are all wrought intended to be wrought; and which he had given Moses power to do, and until the end should be answered and obtained, the letting go of the children of Israel.