Lamentations is set just after Jerusalem’s destruction by the Babylonians in 586 BC. The book is composed of five poems that mourn the catastrophe. In Lamentations, the poet grieves, yet still has faith—crying out to God for mercy.
Although the Hebrew text of Lamentations is anonymous, tradition attributes the book to the prophet Jeremiah. Second Chronicles records that Jeremiah composed a lament for King Josiah, which indicates that he was familiar with this literary form (2 Chr 35:25).
The author of Lamentations appears to have been a witness to the Babylonians’ siege of Jerusalem (see 2 Kgs 25; Jer 52). The eyewitness account emphasizes the book’s message with vivid images of the temple’s destruction and the suffering of God’s people. The author makes clear that although the Babylonians are the cause of the suffering depicted in the book, Yahweh has allowed this to happen because His people have abandoned His ways. Although Yahweh had long held back the negative consequences of forsaking His covenant (His contract), the people refused to change their ways and chose to live outside of relationship with Him (compare Exod 24:1–8).
—Faithlife Study Bible, Lexham Press