II. The prophet himself, as a type of the great prophet, asserts his own commission to deliver this message: Now the Lord God (the same that spoke from the beginning and did not speak in secret) has by his Spirit sent me, v. 16. The Spirit of God is here spoken of as a person distinct from the Father and the Son, and having a divine authority to send prophets. Note, Whom God sends the Spirit sends. Those whom God commissions for any service the Spirit in some measure qualifies for it; and those may speak boldly, and must be heard obediently, whom God and his Spirit send. As that which the prophet says to the same purport with this (ch. lxi. 1) is applied to Christ (Luke iv. 21), so may this be; the Lord God sent him, and he had the Spirit without measure.