How do we know Jesus is the fulfillment of Isaiah 61?

The fulfillment of Isaiah 61 is explicitly confirmed by Jesus Himself when He reads this passage in the synagogue and proclaims, 'This day is this scripture fulfilled in your ears' (Luke 4:21). This declaration is a pivotal moment in the Gospel, as it reveals Jesus’ self-identity and mission. His authority to interpret the Scriptures as referring to Himself underscores the continuity between the Old Testament promises and their realization in Christ. His ministry, focused on healing and deliverance, thus validates the prophetic significance of Isaiah's words.