A light for revelation to the Gentiles, and the glory of your people Israel

Luke 2:21-39

On the eighth day, when it was time to circumcise the child, he was named Jesus, the name the angel had given him before he was conceived.

Now there was a man in Jerusalem called Simeon, who was righteous and devout. He was waiting for the consolation of Israel, and the Holy Spirit was on him. It had been revealed to him by the Holy Spirit that he would not die before he had seen the Lord’s Messiah. Moved by the Spirit, he went into the temple courts. When the parents brought in the child Jesus to do for him what the custom of the Law required, Simeon took him in his arms and praised God, saying: “Sovereign Lord, as you have promised, you may now dismiss your servant in peace. For my eyes have seen your salvation, which you have prepared in the sight of all nations: a light for revelation to the Gentiles, and the glory of your people Israel.”

“This child is destined to cause the falling and rising of many in Israel, and to be a sign that will be spoken against, the thoughts of many hearts will be revealed. And a sword will pierce your own soul too."

There was also a prophet, Anna,  Coming up to them at that very moment, she gave thanks to God and spoke about the child to all who were looking forward to the redemption of Jerusalem.

Why?
The birth of Jesus is known by the Lord and Prophets. Simon and Anna proved the word of the Lord, Jesus is a light for revelation to the Gentiles and the glory of God's people. 

Even though many hearts will be revealed and a sword will pierce your own soul too. Here predicted the future work of Jesus.

How?

Jesus is the son of the Lord, I believe it and I know I am son of the Lord through salvation of Jesus Christ.