This chapter copes with the challenge of portraying a divinity which is supposed to be nameless and imageless, and evoked by ‘abstract’ notions such as the ‘God’, the ‘Lord’, the ‘Name’ or even the ‘Place’. The bans on pronouncing his name and depicting his image are two faces of the same coin: to explore in a new and unpredictable way his identity. Starting from the role played by names in ancient Near Eastern traditions and in the Hebrew Bible, this chapter explores the onomastic puzzle of the biblical god, who holds many names, but whose name YHWH is the only one regarded as a proper name and revealed by himself to Moses. Such a central and enigmatic name is interpreted as a promise of presence and assistance to the people god chose on earth (Israel). The onomastic connection between YHWH and the Jews never ceased to strike external observers and produced many misunderstandings, and even mystifications, in the history of the research of the biblical divine names.