Charles Ellicott Commentary Isaiah 59:16

"And he saw that there was no man, and wondered that there was no intercessor: therefore his own arm brought salvation unto him; and his righteousness, it upheld him." — Isaiah 59:16 (ASV)

He saw that there was no man ... —If the words mean no “righteous man,” we have a parallel in Jeremiah 5:1, and the “intercessor” points to action like that of Aaron (Numbers 16:48) or Phinehas (Numbers 25:7). On the interpretation here adopted, “no man” is equivalent to “no champion.”