Discovery BoxExodus 9:12 
Context9:12 But the Lord hardened 1 Pharaoh’s heart, and he did not listen to them, just as the Lord had predicted to Moses.
Exodus 9:17
Context9:17 You are still exalting 2 yourself against my people by 3 not releasing them.
Exodus 9:34-35
Context9:34 When Pharaoh saw 4 that the rain and hail and thunder ceased, he sinned again: 5 both he and his servants hardened 6 their hearts. 9:35 So Pharaoh’s heart remained hard, 7 and he did not release the Israelites, as the Lord had predicted through Moses.
1 tn This phrase translates the Hebrew word חָזַק (khazaq); see S. R. Driver, Exodus, 53.
2 tn מִסְתּוֹלֵל (mistolel) is a Hitpael participle, from a root that means “raise up, obstruct.” So in the Hitpael it means to “raise oneself up,” “elevate oneself,” or “be an obstructionist.” See W. C. Kaiser, Jr., “Exodus,” EBC 2:363; U. Cassuto, Exodus, 116.
3 tn The infinitive construct with lamed here is epexegetical; it explains how Pharaoh has exalted himself – “by not releasing the people.”
4 tn The clause beginning with the preterite and vav (ו) consecutive is here subordinated to the next, and main clause – that he hardened his heart again.
5 tn The construction is another verbal hendiadys: וַיֹּסֶף לַחֲטֹּא (vayyosef lakhatto’), literally rendered “and he added to sin.” The infinitive construct becomes the main verb, and the Hiphil preterite becomes adverbial. The text is clearly interpreting as sin the hardening of Pharaoh’s heart and his refusal to release Israel. At the least this means that the plagues are his fault, but the expression probably means more than this – he was disobeying Yahweh God.
6 tn This phrase translates the Hebrew word כָּבֵד (kaved); see S. R. Driver, Exodus, 53.
7 tn The verb about Pharaoh’s heart in v. 35 is וַיֶּחֱזַק (vayyekhezaq), a Qal preterite: “and it was hardened” or “strengthened to resist.” This forms the summary statement of this stage in the drama. The verb used in v. 34 to report Pharaoh’s response was וַיַּכְבֵּד (vayyakhbed), a Hiphil preterite: “and he hardened [his heart]” or made it stubborn. The use of two descriptions of Pharaoh’s heart in close succession, along with mention of his servants’ heart condition, underscores the growing extent of the problem.
