Amazed at what the shepherds said. It is miracle when you believed it.

Luke 2:15-24
When they had seen him, they spread the word concerning what had been told them about this child, and all who heard it were amazed at what the shepherds said to them.
But Mary treasured up all these things and pondered them in her heart.
The shepherds returned, glorifying and praising God for all the things they had heard and seen, which were just as they had been told.
Joseph and Mary took him to Jerusalem to present him to the Lord, and to offer a sacrifice in keeping with what is said in the Law of the Lord: “a pair of doves or two young pigeons.”
For the Jewish background to the custom described here. Forty days after Jesus' birth his parents present him to the priest in the Temple. They are not wealthy enough to sacrifice a lamb, so they offer two doves or pigeons.
Why?
Amazed at: People always stand on higher place to listen to other talk. So we have to humble and careful to listen what it is good to our life, no law no reason.
Mary treasured up all these things and pondered them in heart. She know what it is going on and she remember what her duty is.
Life of shepherd is changed, they witness the Jesus born and glorifying and praising God. They knew it is work of the Lord. It is miracle when you believed it.
How?
Trust and deliver the message that God gives to me. No matter people listen to it or not.