The majority of scholars believe that the Prayer of Manasseh was written in Greek (while a minority argues for a Semitic original) in the second or first century BC.
While a prisoner, Manasseh prayed for mercy, and upon being freed and restored to the throne turned from his idolatrous ways (2 Chronicles 33:15–17).
For example, the 5th century Codex Alexandrinus includes the prayer among fourteen Odes appearing just after the Psalms.
[9] The prayer is chanted during the Eastern Orthodox Christian and Byzantine Catholic service of Great Compline.
In the Extraordinary Form, in the Roman Rite Breviary; in the corpus of responsories sung with the readings from the books of Kings between Trinity Sunday and August, the seventh cites the Prayer of Manasseh, together with verses of Psalm 50, the penitential Psalm par excellence.