The Backstory of Jesus' Birth

Jesus of Nazareth , the son of Mary, unlike anyone else. existed before he was conceived and born. He existed from eternity. Although he was born a true human male of the tribe of Judah, descended from Abraham through Isaac and Jacob and from the line of David, he had a prior life of Deity which continued unabated, but then he added to himself humanity. There are a number of Scripture verses that pull back the curtain and tell us the backstory.
Consider Genesis 1:1-3 with John 1:1-3, 14,18. Also Paul's letter to the church at Philippi, chapter 2:5-8, and the sermon letter of Hebrews chapter 10 quoting Psalm 40%-7. At Christmas we sometimes sing high biblical truth about Jesus Christ. Such is the hymn, "Of the Father's Love Begotten" - something of the backstory and the new story of Christ's birth are included in it.