Three and a half
In Revelation 11:9, this signifies to the end and the beginning, or to the end of the present church and the beginning of a new church. (Apocalypse Revealed 505) It also signifies the same as a week because it is half of seven. (Apocalypse Revealed 505[2])
Pharaoh
'Pharaoh,' in Genesis 40, represents the new natural self. 'Pharaoh' and 'the Egyptians' in the Word, signify the sensory and scientific principles. 'Let Pharaoh live,' as in Genesis 42:16, is a phrase that is employed to say something emphatically, thus to state a certainty. 'Pharaoh and his army' signify people who are in falsities from evil. 'Pharaoh' signifies false ideas infesting the truth of the church. It also signifies scientific ideas, or the natural principle in general.
(références: Arcana Coelestia 1487, Arcana Coelestia 5192; Exodus 16)