The narrative of Bel and the Dragon is incorporated as chapter 14 of the extended Book of Daniel. The original Septuagint text in Greek survives in a single manuscript, Codex Chisianus, while the standard text is due to Theodotion, the 2nd-century AD revisor.

The Septuagint, sometimes referred to as the Greek Old Testament or The Translation of the Seventy, and often abbreviated as LXX, is the earliest extant Greek translation of the Hebrew Bible from the original Hebrew. The full Greek title derives from the story recorded in the Letter of Aristeas to Philocrates that "the laws of the Jews" were translated into the Greek language at the request of Ptolemy II Philadelphus by seventy-two Hebrew translators—six from each of the Twelve Tribes of Israel.