Exodus 32:9

9And the Lord said to Moses, “I have seen this people, and behold, ait is a stiff-necked people.

Exodus 33:3-5

3 bGo up to a land flowing with milk and honey; cbut I will not go up among you, dlest I consume you on the way, for you are a estiff-necked people.”

4When the people heard this disastrous word, they fmourned, and gno one put on his ornaments. 5For the Lord had said to Moses, “Say to the people of Israel, ‘You are a hstiff-necked people; if for a single moment I should go up among you, I would iconsume you. So now jtake off your ornaments, that I may know what to do with you.’”

Isaiah 48:4

4Because I know that kyou are obstinate,
and your neck is an iron sinew
and your forehead brass,
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