God’s intervention is laced throughout this passage. Take note in this passage of three ways God showed his intervention to accomplish what he desires.
First, God intervened to bring about the birth of Jesus. We see this in verse 18, when Mary is found to be with child by the Holy Spirit. God intervened in time, at just the right time, to bring about the birth of his son. The heavens came down to earth to dwell among us, by a miraculous conception in an ordinary woman’s womb. God intervened in space and time.
Second, God intervened in Joseph’s plans. When Joseph discovered that Mary was pregnant, he formulated a plan in his own mind to protect her and himself. Joseph had this plan set in his mind, he was considering carrying it out, but God intervened in his plans through a dream. God made clear that his plan was better than Joseph’s plan. Joseph’s plan was an error in understanding. God’s plan was to change time and history.
Third, God intervened to be with us by becoming a man. God had made his plan known through the prophets in the Old Testament, through angels, through revealing himself to men, but God himself had never become a man before now. God’s intervention was fully personal. God became a baby, a flesh and blood human being, in his fullest revelation to us. He showed himself to us so that we could come to know him. Thank you, Lord, for entering our world!