The Akkadian name, Nabû-kudurri-uṣur, means "Oh god Nabu, preserve/defend my firstborn son". Nabu is the Babylonian deity of wisdom, and son of the god Marduk. In an inscription, Nebuchadnezzar styles himself as Nabu's “beloved” and “favourite”. The name is often mistakenly interpreted as "O Nabu, defend my kudurru", in which sense a kudurru is an inscribed stone deed of property. However, when contained in a ruler's title, kudurru approximates to "firstborn son" or "oldest son".