Deut. 31-32
Quite possibly chapter 32 is a song that Moses taught to the Israelites to help them preserve their faith. He knew that “What’s learned in song is remembered long.”
The AI overview says this: Written near the end of Moses’ life, this song is considered his final speech to the Israelites. It praises God, recounts the history of Israel, and predicts that God will eventually vindicate his people.
I remember the scripture songs we sang in church in the 70s. I still remember them. I wish we still sang them.