What does the Bible say about the announcement to Mary?

In Luke 1:26-38, the angel Gabriel is sent by God to Mary, a virgin pledged to marry Joseph of the house of David. The announcement reveals that Mary would conceive in her womb and bear a son, naming him Jesus. This announcement is pivotal in Christian theology as it marks the divine intervention of God in human history through the incarnation of Christ. The passage also emphasizes Mary's favored status but clarifies that all grace originates from God, reinforcing the sovereignty of God's grace in salvation.