Exodus 7:13

New English Translation

¹³Yet Pharaoh’s heart became hard,^[a] and he did not listen to them, just as the Lord had predicted.

Exodus 7:13 tn This phrase translates the Hebrew word חָזַק (khazaq); see S. R. Driver, Exodus, 53.sn For more on this subject, see B. Jacob, Exodus, 241-49. S. R. Driver (Exodus, 53) notes that when this word (חָזַק) is used it indicates a will or attitude that is unyielding and firm, but when כָּבֵד (kaved) is used, it stresses the will as being slow to move, unimpressionable, slow to be affected.

New English Translation (NET)