The LORD is my strength and my song;
However, we also get the sense that this struggle was in no way a problem for the LORD. His enemies are vanquished by merely His breath (v.8,10), or an outstretched hand (v.4,6,7,12). [In fact, this battle reminded me of the way that the book of Revelation portrays the last days, when the LORD will strike down his enemies with his mouth (Revelation 1:16 and19:15). Also, in Revelation 20:7-10, a multitude of nations which surround Jerusalem are simply devoured by fire from heaven, while Satan, the beast and the false prophet are thrown into a lake of burning sulfur. However, I am getting ahead of the story!]
Moses' song is not only about their present situation with Pharaoh's armies. After proclaiming the LORD's victory, and how the LORD is unlike any other so-called 'god', Moses launches into a confident statement of how the LORD will continue to lead His people all the way unto the land which He had promised their forefathers. (v.13) The verses which follow (v. 15-18) give a kind of outline of their future journey: Philistia, Edom, Moab, Canaan.
Finally, a recap of the battle reminds the Israelites how the forces of Pharaoh were drowned, while the Israelites were able to walk through the sea on dry ground. (v.19)
Miriam's part in the celebration is also noted. She was a prophetess, and the sister of Moses and Aaron. (v.20) She led the women with tambourines in song and dance to celebrate the victory which the LORD had accomplished. The refrain which is recorded in verse 21 may have been a kind of chorus which was interwoven with the rest of this victory song:
All of the Israelites sang this song to the LORD.(v.1)
That is very appropriate, for He had saved them all.
and the victory over Pharaoh and the Egyptian army
are seen as a pivotal point in God's dealings with the nation of Israel.
I imagine that the Israelites also see this as the first action which they took together as a nation.
God also had other symbolism inherent in this victory,
which will become evident eventually as we continue to examine His story (history).
For now, let's just say that the LORD would eventually deliver the Israelites
(and, indeed, the people of every nation)
from a far more significant foe than a pharaoh of Egypt.