Isaiah 48:4

From my knowing that thou art obstinate, And a sinew of iron thy neck, And thy forehead brass,

Exodus 32:9

And Jehovah saith unto Moses, 'I have seen this people, and lo, it is a stiff-necked people;

Deuteronomy 31:27

for I -- I have known thy rebellion, and thy stiff neck; lo, in my being yet alive with you to-day, rebellious ye have been with Jehovah, and also surely after my death.

Acts 7:51

Ye stiff-necked and uncircumcised in heart and in ears! ye do always the Holy Spirit resist; as your fathers -- also ye;

2 Chronicles 36:13

and also, against king Nebuchadnezzar he hath rebelled, who had caused him to swear by God, and he hardeneth his neck, and strengtheneth his heart, against turning back unto Jehovah, God of Israel.

Proverbs 29:1

A man often reproved, hardening the neck, Is suddenly broken, and there is no healing.

Exodus 33:3

unto a land flowing with milk and honey, for I do not go up in thy midst, for thou art a stiff-necked people -- lest I consume thee in the way.'

Exodus 33:5

And Jehovah saith unto Moses, 'Say unto the sons of Israel, Ye are a stiff-necked people; one moment -- I come up into thy midst, and have consumed thee; and now, put down thine ornaments from off thee, and I know what I do to thee;'

Deuteronomy 10:16

and ye have circumcised the foreskin of your heart, and your neck ye do not harden any more;

2 Kings 17:14

and they have not hearkened, and harden their neck, like the neck of their fathers, who did not remain stedfast in Jehovah their God,

2 Chronicles 30:8

'Now, harden not your neck like your fathers, give a hand to Jehovah, and come in to His sanctuary, that He hath sanctified to the age, and serve Jehovah your God, and the fierceness of His anger doth turn back from you;

Nehemiah 9:16-17

'And they and our fathers have acted proudly, and harden their neck, and have not hearkened unto Thy commands,

Nehemiah 9:28

'And when they have rest, they turn back to do evil before Thee, and Thou dost leave them in the hand of their enemies, and they rule over them; and they turn back, and call Thee, and Thou from the heavens dost hear, and dost deliver them, according to Thy mercies, many times,

Psalm 75:5

Raise not up on high your horn, (Ye speak with a stiff neck.)

Psalm 78:8

And they are not like their fathers, A generation apostate and rebellious, A generation! it hath not prepared its heart, Nor stedfast with God is its spirit.

Isaiah 46:12

Hearken unto Me, ye mighty in heart, Who are far from righteousness.

Jeremiah 3:3

And withheld are showers, and gathered rain hath not been. The forehead of a whorish woman thou hast, Thou hast refused to be ashamed.

Jeremiah 5:3

Jehovah, Thine eyes, are they not on stedfastness? Thou hast smitten them, and they have not grieved, Thou hast consumed them, They have refused to receive instruction, They made their faces harder than a rock, They have refused to turn back.

Jeremiah 7:26

And they have not hearkened unto Me, Nor inclined their ear, and harden their neck, They have done evil above their fathers.

Jeremiah 19:15

Thus said Jehovah of Hosts, God of Israel: Lo, I am bringing in unto this city, and on all its cities, all the evil that I have spoken against it, for they have hardened their neck -- not to hear My words!'

Ezekiel 3:4-9

And He saith unto me, 'Son of man, go, enter in unto the house of Israel, and thou hast spoken with My words unto them.

Daniel 5:20

and when his heart was high, and his spirit was strong to act proudly, he hath been caused to come down from the throne of his kingdom, and his glory they have caused to pass away from him,

Zechariah 7:11-12

And they refuse to attend, And they give a refractory shoulder, And their ears have made heavy against hearing.

Romans 2:5

but, according to thy hardness and impenitent heart, thou dost treasure up to thyself wrath, in a day of wrath and of the revelation of the righteous judgment of God,

Hebrews 3:13

but exhort ye one another every day, while the To-day is called, that none of you may be hardened by the deceitfulness of the sin,

Treasury of Scripture Knowledge

Summary

Because I knew that thou art obstinate, and thy neck is an iron sinew, and thy brow brass;

General references

Bible References

Thy brow

Jeremiah 3:3
And withheld are showers, and gathered rain hath not been. The forehead of a whorish woman thou hast, Thou hast refused to be ashamed.
Ezekiel 3:7
but the house of Israel are not willing to hearken unto thee, for they are not willing to hearken unto Me, for all the house of Israel are brazen-faced and strong-hearted.

General references

Job 40:18
His bones are tubes of brass, His bones are as a bar of iron.