Read those entrails!

Deductive divination is no less initiated [than prophecy, etc.] from the divine realm, but its revelation is communicated through events and phenomena that can be observed. Note that in Israelite thinking that which is in the category of inspired divination is allowed—God speaks, but that which is in the category of deductive divination is forbidden—Yahweh does not write that way (e.g., on entrails). The latter type of divination is found in Mesopotamia as early as the third millennium.—Ancient Near Eastern Thought and the Old Testament, 2nd ed., page 224