The semantics of ' caliph' in the Quran

The commentators have come up with different interpretation because of the disagreement in the meaning of "caliph" in Q2:30. Their interpretive thoughts are diverse in Exemplified exterior of the caliph and "Mustakhlafun 'anh" (predecessor). This paper attempts to clarify, based on the verbal texture of the verses and Arabic literature and signs such as rational proofs, authentic traditions, prays, and the history of Islam, clarify the meaning of the caliph, and has shown that the status of caliphate only for prophets and household of Prophet, not all person of Adam. On the other hand, this paper explains that "Mustakhlafun 'anh" not refer to God, but refer to prophets and household of Prophet that are one after the other, and the dignity of the caliph due to the successor and giver and also due to scientific superiority to the angels, and the limited use of the caliph of Allah in traditions is the spiritual added that have hidden preposition "Min" and "Li".