The text is about the Mongol invasion of Rus'. It describes the devastation caused by the invasion, the panic among the people, and the death of Grand Prince Yuri Vsevolodovich. It also mentions that he was later canonized by the Orthodox Church.

Analysis of the text:

• The text describes the Mongol invasion of Rus' in 1239.
• It details the destruction and panic caused by the invasion.
• It mentions the death of Grand Prince Yuri Vsevolodovich and the transfer of his body to Vladimir.
• It states that Yuri Vsevolodovich was later canonized by the Orthodox Church as a saint.
• The date of his commemoration is given as February 17.

Summary: The text recounts the events of the Mongol invasion of Rus', highlighting the destruction, the death of Grand Prince Yuri Vsevolodovich, and his subsequent canonization.