Catholics apply to apostolic tradition many of the qualities that evangelicals and other Protestants apply to scripture alone. For example, the 1978 Evangelical declaration "Chicago Statement on Biblical Inerrancy", states: "We affirm that inspiration was the work in which God by His Spirit, through human writers, gave us His Word. The origin of Scripture is divine. The mode of divine inspiration remains largely a mystery to us. We deny that inspiration can be reduced to human insight, or to heightened states of consciousness of any kind."