The "De trinitate libri XII", composed in 359 and 360, was the first successful expression in Latin of that Council's theological subtleties originally elaborated in Greek. Although some members of Hilary's own party thought the first had shown too great a forbearance towards the Arians, Hilary replied to their criticisms in the "Apologetica ad reprehensores libri de synodis responsa". Hilary was a firm guardian of the Trinity as taught by the Western church, and therefore saw the foreseen Antichrist in those who repudiated the divinity of the Son and thought Him to be but a created Being. "Hence also they who deny that Christ is the Son of God must have Antichrist for their Christ," was the way he stated it.