The Nabonidus Chronicle appears to have been composed by the (Babylonian) priests of Marduk, the chief god of Babylon. It has been characterised as "a piece of propaganda at Cyrus's service" [15] and as possibly "the result of the propaganda of the priesthood of Marduk to vilify Nabonidus".[16] Julye Bidmead attributes the priests' hostility to Nabonidus's unsuccessful attempts to introduce the worship of the moon god Sîn.