For centuries leading up to the conception and birth of Jesus, God had promised through the prophets that he would send an anointed king to save his people, Israel. This king would come as a servant and would mysteriously save his people through his suffering. This king would be glorified somehow, and in doing so, would bring redemption, salvation, and glory to not only Israel but to the entire human race.
And so it happened in a way that went far beyond Israel's expectations. In other words, God was extremely generous in fulfilling his promises. n the fulness of time, this foretold King was conceived in the womb of Mary, a virgin, by the power of the Holy Spirit, and the name given to him was Jesus. In Hebrew, this name is Yeshua (from which we get the modern-day name of "Joshua"), and it literally means "God saves!"
The title "Christ" (in Hebrew: Messiah • in Greek: Christos) means "The Anointed One." In the Old Testament, priests, prophets, and kings were anointed with a flask of consecrated oil, and in several instances, the Holy Spirit came down from heaven to confirm such a sacred appointment (e.g., with Saul and David, kings of Israel). Jesus experienced this appointment in his baptism in the Jordan River, by the hands of John the Baptist, when the Holy Spirit rushes upon him, as he was baptized.
The salvation Jesus brought - as the anointed priestly and prophetic king - was far greater than the temporarily political and military victors of his royal Israelite predecessors. In fact, many of Jesus' contemporaries expected him to amass an army, defeat their Roman oppressors, and bring political sovereignty to the people of Israel. Instead, Jesus conquered the greatest enemy we all face: the powers of darkness (the demonic world) and the grip that sin has over our lives. He did this in the most incredible way: by allowing those powers to seemingly destroy him!
Jesus suffered a most excruciating death upon the Roman instrument of torture and death: the Cross. Yet, he did so completely voluntarily, without any struggle on his part. He gave his life freely as a gift, in order to atone for the sins of Israel and the entire world.
I am trying here to prevent anyone saying the really foolish thing that people often say about Him: "I’m ready to accept Jesus as a great moral teacher, but I don’t accept his claim to be God." That is the one thing we must not say. A man who was merely a man and said the sort of things Jesus said would not be a great moral teacher. He would either be a lunatic — on the level with the man who says he is a poached egg — or else he would be the Devil of Hell. You must make your choice. Either this man was, and is, the Son of God, or else a madman or something worse. You can shut him up for a fool, you can spit at him and kill him as a demon or you can fall at his feet and call him Lord and God, but let us not come with any patronizing nonsense about his being a great human teacher. He has not left that open to us. He did not intend to. C.S. Lewis in Mere Christianity