The Hebrew term behind two armies
could be taken as the proper name of the village mentioned in Genesis 32:2 or as meaning two groups.
Either way, it appears to refer to the name of some dance known to the ancient Israelites but now lost to us.1 One possible dance that is being referenced is the dance that women danced publicly in celebration of military victories in ancient Israel (Exodus 15:20; Judges 11:34; 1 Samuel 18:6–7). There is no necessary suggestion, however, that the young woman is actually dancing at this point in the Song.2
The point is that she draws and holds the eyes of all around her in the same way that such dancers do, and that the community should not stare at her or try to keep her to themselves as if she were some kind of entertainment. The young man is once again expressing the fact that she is his beloved and enjoyment of her is his privilege.
13 Return, return, O Shulammite, return, return, that we may look upon you. Why should you look upon the Shulammite, as upon a dance before two armies?