In Christianity, the term biblical authority refers to two complementary ideas: the extent to which one can regard the commandments and doctrines within the Old and New Testament scriptures as authoritative over humans' belief and conduct; the extent to which Biblical propositions are accurate in matters of history and science. The case for biblical authority stems from the claim that God has revealed himself in written form through human authors and that the information contained in canonical books is not of human origin. It entails, but is not exhausted by, questions raised by biblical inerrancy, biblical infallibility, biblical interpretation, biblical criticism, and biblical law in Christianity. There are many factions within Christianity as a religion. Each division defines the Bible as the word of authority as a direct communication of the word of God. Different Christian denominations have differing interpretations of the meaning of the words within the Bible and therefore diverge in religious practice. In modern Christian research, experts have challenged certain beliefs about biblical authority and the Bible as an exact replica of the word of God. Significant perspectives suggest that the standards of accuracy most likely differ between ancient times and now, which must be considered when interpreting the Bible. Biblical authority refers to the notion that the Bible is authoritative and useful in guiding matters of Christian practice because it represents the word of God. The nature of biblical authority is that it involves critique of the Bible and sources of biblical literature in order to determine the accuracy and authority of its information in regards to communicating the word of God. It examines biblical literature in order to guide practice. Biblical authority can be determined through the processes of critical interpretation, known as exegesis, as well as hermeneutics, which refers to the science of interpretive principles. Differing interpretations of biblical authority by factions of Christianity has led to divergent practices.