In Part II I'm going to use Scott Hahn's exegesis of scripture re Mary.
Highly recommend his site too Salvation History. In the OT we read,"And the LORD said to Moses, “Tell Aaron your brother not to come at all times into the holy place within the veil, before the mercy seat which is upon the ark, lest he die; for I will appear in the cloud upon the mercy seat." The cloud is the Shekinah.
Scott Hahn explains this shenikah,
the second temple was built, no Ark of the Covenant, no mercy seat, no cherubim and also no shekina. What's a shekina? That is the dwelling presence of God, the glory cloud which at once is luminous and yet dark. It's that within which you saw all the thunder and the lightning. It's that which Moses entered, the shekina. It's what made the tabernacle so holy. In fact when this glorious cloud descended from heaven down to the tabernacle that had been built, Moses himself couldn't even enter the tabernacle, much less the other priests, to do service because the glorious, smoky cloud of God's presence filled it, once the Ark had been consecrated.
When Solomon built the temple, after seven years he had this great feast of dedication and at the end of it he had pronounced this long prayer and he offered up sacrifices, and then all of a sudden fire came down from heaven and consumed all the sacrifices on the altar. Everybody falls flat on their faces and they just cry, "Glory!" The shekina is there to stay until Ezekiel sees it depart. In fact, he was to name one of his kids Ichobod because the glory is departed. Ichobod, the glory is departed, Ichobod Crane and all that stuff, right? Same thing.
The glory departs right before the Babylonians come in. Seventy years later or so, when they begin rebuilding the temple, the Ark is not found. It's not returned. No mercy seat, cherubim and thus no shekina. No glorious cloud signifying the presence of the Holy Spirit, and the Wailing Wall to this day. The prime purpose of the Wailing Wall is to bewail the loss of the shekina, the glorious cloud, presence of God dwelling in the midst of Israel.