Yesaya 48:4

48:4 I did this ¹  because I know how stubborn you are.

Your neck muscles are like iron

and your forehead like bronze. ² 

[48:4]  ¹ tn The words “I did this” are supplied in the translation for stylistic reasons. In the Hebrew text v. 4 is subordinated to v. 3.

[48:4]  ² sn The image is that of a person who has tensed the muscles of the face and neck as a sign of resolute refusal.