In the story about the burning bush, Moses clearly shows that people will live again. He said, "The Lord is the God worshiped by Abraham, Isaac, and Jacob."
The LORD was standing beside the ladder and said: I am the LORD God who was worshiped by Abraham and Isaac. I will give to you and your family the land on which you are now sleeping.
Then Jacob prayed: You, LORD, are the God who was worshiped by my grandfather Abraham and by my father Isaac. You told me to return home to my family, and you promised to be with me and make me successful.