New International Version
For I knew how stubborn you were; your neck muscles were iron, your forehead was bronze.

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

Berean Study Bible
For I knew that you are stubborn; your neck is iron and your forehead is bronze.

Douay-Rheims Bible
For I knew that thou art stubborn, and thy neck is as an iron sinew, and thy forehead as brass.

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

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

World English Bible
Because I knew that you are obstinate, and your neck is an iron sinew, and your brow brass;

Young's Literal Translation
From my knowing that thou art obstinate, And a sinew of iron thy neck, And thy forehead brass,

Isaiah 48:4 Additional Translations ...