Here is the Bible verse Luke 2:10-12 from the King James Version:

"And the angel said unto them, Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people. For unto you is born this day in the city of David a Saviour, which is Christ the Lord. And this shall be a sign unto you; Ye shall find the babe wrapped in swaddling clothes, lying in a manger."

In this passage, Luke describes the angel's announcement to the shepherds about the birth of Jesus. The angel tells the shepherds not to fear, because he brings them good news that will bring great joy to all people. He tells them that a Savior, Christ the Lord, has been born in the city of David. The angel then gives the shepherds a sign to identify the newborn Savior - they will find a baby wrapped in swaddling clothes and lying in a manger.

The themes present in this passage are the concepts of joy, salvation, and the miraculous nature of Jesus' birth. The announcement of the birth of Jesus is accompanied by the promise of "great joy" for all people. This joy is not just a fleeting emotion, but it is a deep and lasting joy that comes from the fulfillment of God's promise to send a Savior. The birth of Jesus is seen as the embodiment of God's salvation for humanity, bringing hope and renewal to the world. Additionally, the miraculous nature of Jesus' birth is emphasized through the angel's announcement and the sign given to the shepherds.

The context of this passage is significant in understanding its meaning. At this point in the Gospel of Luke, Jesus has just been born in Bethlehem. The angelic announcement to the shepherds serves as a proclamation of the fulfillment of Old Testament prophecies concerning the coming of the Messiah. The shepherds were considered to be of low social status, and the fact that the angel appeared to them emphasizes the universality of the good news of Jesus' birth - it is meant for all people, regardless of social standing or status. This further reinforces the themes of joy and salvation, as the message of Jesus' birth is meant to bring hope and joy to all people, regardless of their circumstances.

The symbolism in this passage is also rich and meaningful. The announcement of Jesus' birth to the shepherds symbolizes the inclusivity of the Gospel message. The fact that the shepherds, who were considered of lowly status, were chosen to hear the news of Jesus' birth reflects the idea that the Gospel is for everyone, regardless of social standing or background. The image of the baby Jesus wrapped in swaddling clothes and lying in a manger is also deeply symbolic. It highlights the humility and simplicity of Jesus' birth, as well as foreshadowing his future ministry of serving and sacrificing for humanity.

Overall, Luke 2:10-12 is a powerful and significant passage that announces the birth of Jesus and proclaims the universal joy and salvation that comes through him. The passage emphasizes the themes of joy, salvation, and the miraculous nature of Jesus' birth, and its context and symbolism further enrich its meaning. As Christians, this passage serves as a reminder of the hope and joy that Jesus brings to the world, as well as the inclusive nature of the Gospel message.