Isaiah 61:2

Third, proclaiming good news means He would bring, for God, a year of favor and a day of vengeance. God’s favor would last much longer than His vengeance. A prolonged time of blessing is in view, followed by a short time of punishment for oppressors.

When Jesus Christ read this passage in the Nazareth synagogue and claimed that He fulfilled it, He stopped reading after "the favorable year of Yahweh" and did not read "and the day of vengeance of our God" (Luke 4:18-19). He meant that He was the Anointed One of whom Isaiah spoke, and that He had come to bring salvation. The day of salvation had begun (cf. Isaiah 49:8; 2 Corinthians 6:2). However, the day of vengeance would not begin until much later, specifically at the end of the Tribulation when He will return (cf. Isaiah 34:8; Isaiah 35:4; Isaiah 63:4; Daniel 7:21; Daniel 7:24-27; Micah 5:15; 1 Peter 1:11; Revelation 12:13-17; Revelation 19:15-20). [Note: See Gary Yates, "The Use of Isaiah 61:1 (and 58:6) in Luke 4:18-19," Exegesis and Exposition 2:1 (Summer 1987):13-27.]

Fourth, announcing good news means the Anointed One would comfort those who mourn because they believe their sins have doomed them (cf. ch. 12; Isaiah 40:1-2; Isaiah 49:13; Matthew 5:3-4). God would accept them in spite of their sin because of the Servant’s work.