In Rev. 1:4, John describes God as the one who is and who was and who is to come. His description grows out of Jewish reflection on the meaning of the name YHWH, and in particular on the enigmatic words of Ex. 3:14 I am who I am. Sean M. McDonough traces the story of the name YHWH in the New Testament era, and its bearing on the interpretation of Rev. 1:4. Who used the name? Was it ever pronounced, and if so, how and by whom? Why did it fall into...