7305. Pharaoh's heart is made heavy, he refuseth to let the people go. That this signifies that they obstinately determined not to release those whom they infest, is evident from the signification of "the heart being made heavy," as also being "made firm," and "hardened," as being obstinacy (as above, n. 7272, 7300); from the signification of "refusing to let go," as being not to release; and from the representation of Pharaoh, of whom this is said, as being those who infest (of which above).