Isaiah 61:1

He that is the best expositor of scripture has no doubt given us the best exposition of these verses, even our Lord Jesus himself, who read this in the synagogue at Nazareth (perhaps it was the lesson for the day) and applied it entirely to himself, saying, This day is this scripture fulfilled in your ears (Luk 4:17, Luk 4:18, Luk 4:21); and the gracious words which proceeded out of his mouth, in the opening of this text, were admired by all that heard them. As Isaiah was authorized and directed to proclaim liberty to the Jews in Babylon, so was Christ, God's messenger, to publish a more joyful jubilee to a lost world. And here we are told, I. How he was fitted and qualified for this work: The Spirit of the Lord God is upon me, Isa 61:1. The prophets had the Spirit of God moving them at times, both instructing them what to say and exciting them to say it. Christ had the Spirit always resting on him without measure; but to the same intent that the prophets had, as a Spirit of counsel and a Spirit of courage, Isa 11:1-3. When he entered upon the execution of his prophetical office the Spirit, as a dove, descended upon him, Mat 3:16. This Spirit which was upon him he communicated to those whom he sent to proclaim the same glad tidings, saying to them, when he gave them their commission, Receive you the Holy Ghost, thereby ratifying it.

— Matthew Henry's Concise Commentary (public domain)