Numbers chapter 10

After reading chapter 10:

*The first part of this chapter is about the creation of two silver trumpets to be used by Aaron and his sons.
-Both trumpets blown at the same time signal a community assembly at the entrance to the tabernacle. Though how you get a million or so people to hear two trumpets, plus gather together and assemble in one spot, is a mystery.
-One trumpet means only the heads of the clans are to assemble.
-One trumpet blast, of a different signal, means the eastern camps start moving. A second blast after that and the southern camps start moving. The text doesn't mention the western and northern camps
-A trumpet blast before a battle will ensure they are remembered by God and are rescued from their enemies. God needs reminding.
-The trumpets will also be sounded at feasts, festivals, and over burnt offerings and fellowship offerings. So, I'm guessing the trumpets would have been sounded fairly often. This reminds me of a scene in the Sound of Music.

*On the twentieth day of the second month, of the second year, the cloud over the tabernacle lifted. The Israelites broke camp and followed the cloud from the desert of Sinai to the desert of Paran.
The divisions of clans set out in a particular order, Judah's camp divisions left first. Again, the tribe of Judah is being given priority, even though Reuben was the oldest of Israel's sons. I wonder if this is another case of the younger brother symbolism found so often throughout the bible narrative. It looks ahead to a time when the  of tribe of Judah  becomes the leading tribe in the kingdom of Judah. If so, that clearly means this narrative was not written till after that time, which was not till at least the 9th century B.C.E., a few hundred years after these events would have taken place.

*The Gershonites and Merarites were to leave with the first Israelite clans so they could set up the tabernacle in the new spot before the Kohathites arrived with the holy accoutrements.

*Moses invited his brother-in-law Hobab to come with them. He declined and said he was going back to his own people. Moses begged him to stay and help them out. He promised Hobab a share of the spoils. So they travelled for three days. (A standard journey for those times.) Every day they set out, and every time they camped, Moses repeated some magical words to get Yahweh to stay with them.