(Isa_40:12-14) Who. . . . Who. . . With whom. . . ?Isa_40:12-14 are introductory: while the Figure of speech Erotesis emphasizes the importance of Him Who speaks.
His counseller = the man (Hebrew. 'ish.App-14.) of His counsel. Note the Figure of speech Ellipsis = "[who being] His counseller hath", &c?