This is about the great news (¹).
1. A very dangerous news, i.e. the news about the Day of Judgement. Or, very good news i.e. the Prophethood of the Holy Prophet Or, truly grand news about the personality attributes and praises of the Holy Prophet for saying the news of the Holy Prophet to be truly grand is because The attributes of the Messenger of Allah are neither restricted to place nor time.
And Allah Almighty gave the news of the Holy Prophet's صلى الله عليه وآله وسلم attributes, and the entire creation sang his praises. Thus, any person who becomes the reciter of the Holy Prophet's صلى الله عليه وآله وسلم praises has achieved greatness.