In the seventh aliyah, after Moshe finishes teaching this song to the Jewish people, he said "pay close attention to all this, it isn't an empty teaching, it is our life, and with it we will long endure on our land." Later in the day that this song was stated, G-d tells Moshe to climb up the mountain Nevo, and see the land of Israel from afar. He is further told that when he is up the mountain, he will pass away, without entering the land, because of the incident at the waters of Maribah, where Moshe struck the rock, and therefore didn't sanctify G-d's name.