TSK
Treasury of Scripture Knowledge references in WEB.
Afterward Moses and Aaron came, and said to Pharaoh, "This is what Yahweh, the God of Israel, says, 'Let my people go, that they may hold a feast to me in the wilderness.'"
Yahweh said to Moses, "Rise up early in the morning, and stand before Pharaoh, and tell him, 'This is what Yahweh, the God of the Hebrews, says: "Let my people go, that they may serve me.
"'But if you will not listen to me, and will not do all these commandments;
"'If you in spite of this won't listen to me, but walk contrary to me;
But God will strike through the head of his enemies, the hairy scalp of such a one as still continues in his guiltiness.
but to those who are self-seeking, and don't obey the truth, but obey unrighteousness, will be wrath and indignation,
People were scorched with great heat, and people blasphemed the name of God who has the power over these plagues. They didn't repent and give him glory.