'New Song' in the Bible

And their voices are sounding in a new song, saying, It is right for you to take the book and to make it open: for you were put to death and have made an offering to God of your blood for men of every tribe, and language, and people, and nation,

And they made as it seemed a new song before the high seat, and before the four beasts and the rulers: and no man might have knowledge of the song but the hundred and forty-four thousand, even those from the earth whom God has made his for a price.