It's written in Hebrew.
You have to add, the, of and from, according to wisdom.
He is the counselor from or of the Mighty God.
really, here it is from JW.org, "His name will be called Wonderful Counselor,
Mighty God, Eternal Father, Prince of Peace" Note, HIS NAME, that is the Name of the Child, Who is Jesus Christ. there is NO from of of in the Hebrew!
Targum Jonathan, This Aramaic paraphrase dates from the 1st century A.D. or earlier.
“The prophet said to the house of David, For unto us a child is born, unto us a son is given, and he has taken the law upon himself to keep it. His name is called from eternity wonderful,
the mighty God who liveth to eternity, the Messiah whose peace shall be great upon us in his days.” (
https://www.sefaria.org/Targum_Jonathan_on_Isaiah.9.6)
“And there was called His name from of old, Wonderful Counsellor,
Mighty God, He who lives for ever, the Messiah, in whose days peace shall increase upon us.” (J. F. Stenning, The Targum of Isaiah. Oxford, 1949)
"For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor,
The mighty God, The everlasting Father, The Prince of Peace" (
https://www.jewishvirtuallibrary.org/yeshayahu-isaiah-chapter-9)