The Bible teaches two separate “comings” of Jesus. That is, the Bible teaches two advents (or parts) to Christ’s coming to the earth. We refer to these respectively as Christ’s First Coming and Second Coming.
Isaiah 9:6 says, “For to us a child is born, to us a son is given, and the government will be on his shoulders.” The first part of this verse is a reference to Christ’s First Coming (At His First Coming Jesus was born into this world so that he could die in our place, for our sins). The second part of this verse (and the government will be on his shoulders) is a reference to Jesus’ Second Coming (At His Second Coming Jesus will overthrow the kingdom of Satan and establish his own).
Jesus tried to teach this concept of two advents but the people missed it. In Luke 4 Jesus is teaching in the synagogue. He pulls out the scroll of the prophet Isaiah and begins reading from what we now know as Isaiah 61:1-2. Jesus read “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.” Then he rolled up the scroll, gave it back to the attendant and sat down. The eyes of everyone in the synagogue were fastened on him. He began by saying to them, “Today this scripture is fulfilled in your hearing” (Luke 4:18-22). Here Jesus reads one part of Isaiah’s prophecy, not the whole thing. Jesus here primarily reads Isaiah 61:1. Isaiah’s prophecy goes on in v.2 to say that one day God’s promised Messiah will “proclaim the day of vengeance of our God.” But Jesus doesn’t read that part of v.2. He only reads the parts of the prophecy that relate to his First Coming and then states that “this scripture is fulfilled.” What Scripture? The first part! The part that relates to his First Coming!
There was a lot of confusion in Christ’s time as to whether or not Jesus was truly the Messiah because the people of that time failed to see there were two advents (or two parts) to his coming. They didn’t realize that first He would come to die, then, later He would come to conquer and establish his earthly kingdom. Because the people didn’t see two advents of Christ’s coming in Scripture, many rejected Jesus as their true Messiah when he failed to overthrow the Roman government and establish his own. We who live 2,000 years or so after the death of Christ have the gift of hindsight to help us see the prophetic Scriptures more clearly than those who lived in Christ’s time.