Expectation of the Messiah and his Spirit
This is why Christ inaugurates the proclamation of the Good News by making his own the following passage from Isaiah:
The Spirit of the LORD God is upon me, because the LORD has anointed me to bring good tidings to the afflicted; he has sent me to bind up the broken hearted, to proclaim liberty to the captives, and the opening of the prison to those who are bound; to proclaim the year of the LORD'S favor.
Source: Catechism of the Catholic Church (Vatican.va)