Obduracy (Hardness): General Scriptures Concerning

Again and again the LORD, the God of their fathers, sent word to His people through His messengers because He had compassion on them and on His dwelling place.

But they mocked the messengers of God, despising His words and scoffing at His prophets, until the wrath of the LORD against His people was stirred up beyond remedy.

…do not harden your hearts as you did at Meribah, in the day at Massah in the wilderness, …

Because you refused my call, and no one took my outstretched hand, …

A man who remains stiff-necked after much reproof will suddenly be shattered beyond recovery.

…do not harden your hearts, as you did in the rebellion, in the day of testing in the wilderness,

As it has been said: “Today, if you hear His voice, do not harden your hearts, as you did in the rebellion.”

God again designated a certain day as “Today,” when a long time later He spoke through David as was just stated: “Today, if you hear His voice, do not harden your hearts.”

Now the rest of mankind who were not killed by these plagues still did not repent of the works of their hands. They did not stop worshiping demons and idols of gold, silver, bronze, stone, and wood, which cannot see or hear or walk.

Furthermore, they did not repent of their murder, sorcery, sexual immorality, and theft.