He wrote five books, including The Trial and Death of Jesus in 1968, in which he argued that it was the Romans, not the Sanhedrin, who tried and executed Jesus.
Napsal pět knih, včetně The Trial and Death of Jesus (1968), ve které tvrdil, že to byli Římané a ne Sanhedrin, kdo soudil a popravil Ježíše Nazaretského.