Brant Pitre at Singing in the Reign has this interesting post on the parallels between Mary in Luke's Gospel and the Ark of the Covenant in 2 Samuel.
1. The Descent of the Glory CloudPosted for All Saints Anglican Church in Sandy Hill as they begin a study of Luke.
The glory of the Lord and the cloud cover the Tabernacle (containing the Ark) and “overshadow” (episkiazen)them (Exod 40:34-35, cf. v. 3).
The Holy Spirit comes upon Mary and the power of the Most High “overshadows” (episkiasei) her (Luke 1:35).
2. The Ark Goes into the Hill Country
David “arose and went” to the hill country of Judah to bring up “the ark of God” (2 Samuel 6:2).
Mary “arose and went” into the hill country of Judah to visit Elizabeth (Luke 1:39).
3. How Can the Ark Come to Me?
David admits his unworthiness to receive the Ark by exclaiming: “How can the ark of the Lord“ come to me?” (2 Samuel 6:9)
Elizabeth admits her unworthiness to receive Mary by exclaiming: "And why is this granted to me, that the mother of my Lord should come to me?” (Luke 1:43)
4. Leaping and Shouting Before the Ark
David “leaped” before the Ark as it was brought in “with shouting” (2 Samuel 6:15-16)
John “leapt” in Elizabeth’s womb at the sound of Mary’s voice and Elizabeth cried “with a loud shout”: “Blessed are you among women, and blessed in the fruit of your womb!" (Luke 1:41-42)
5. The Ark Stays for 3 Months
The Ark remained in the hill country, in the house of Obed-Edom, for “three months” (2 Samuel 6:11)
Mary remained in the hill country, inElizabeth's house, “three months” (Luke 1:56)
See here for my opening story segment on the annunciation last year.