The time periods that occur in the two types of prophecies discussed above contrast in general with regard to their length, if they are all interpreted as literal time. The time prophecies encountered in historical narratives and classical prophets of the OT run as long as 400 years (Gen 15:13). The other extreme is encountered in apocalyptic where one time prophecy extends for only 3½ days (Rev 11:9). The longest of the time periods in apocalyptic extends for only 6½