After Jesus is strengthened by the Spirit in the wilderness, He is empowered by the same Spirit to inaugurate a great ministry in Galilee (Luke 4:14). Jesus, quoting Isaiah declares, “The Spirit of the Lord is on me, because he has anointed me  to proclaim good news to the poor. He has sent me to proclaim freedom for the prisoners and recovery of sight for the blind, to set the oppressed free, to proclaim the year of the Lord’s favor.” This year of the Lord’s favor would remind Jesus’ audience of the Jubilee year commanded in Leviticus 27, a celebration year that as far as we know Israel never kept. Disobedience to the laws of giving land rest, like the Jubilee would be punished by exile (Leviticus 26:27-34), and so it was. So when Jesus  brings good news to the poor AND set the oppressed free by the power of the Spirit, He is also in an important sense leading Israel out of their punishment and exile. As we see in the rest of the chapter, Jesus immediately goes about healing many with great sickness and disease. Jesus’ proclamation sets the stage for the purpose of the rest of his ministry as through His life he will constantly be releasing those captive to disease and infirmity. Most importantly, he will set those captive to sin free and give all life through the resurrection. After this declaration, Luke doesn’t keep emphasizing the Spirit as it should be clear, everything Jesus does in terms of setting the captive free is done because the Spirit of God is upon Him, just like Isaiah promised.