Isaiah 48:15-16

Though the whole passage is but a continuation of the same blessed discourse, in which God himself is the speaker; yet I stop the Reader under these two verses, to remark the peculiarity of what is said. If Jesus, under the spirit of prophecy, be here delivering these gracious truths to the Church, (as I think cannot be questioned) then will it follow, that all the three persons of the Godhead are here introduced as engaged in this blessed sermon. Jesus opened his gospel, and spoke not in secret, but openly to the people: so he received his commission, Isaiah 6:8; and so, in the synagogue, he declared the Spirit of Jehovah to be upon him; compare Isaiah 61:1, etc. with Luke 4:18, etc. And if Jehovah and his Spirit (as in those verses is said to have been the case) be thus sent, who will not see, as in the baptism of Jesus, all the three persons of the Godhead engaged in this act of grace, Matthew 3:16.