Page "Hebrew astronomy" Paragraph 13
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The high value of astronomical knowledge is already demonstrated by the astronomical section of the Book of Enoch ( about 72-80 BCE ), as well as by such sayings as those of Eleazar Ḥisma ( about 100 ), a profound mathematician, who could " count the drops in the ocean " ( Hor.
10a ), and who declared that " ability to compute the solstice and the calendar is the ' dessert of wisdom '" ( Ab.
Among the sciences that Johanan ben Zakkai mastered was a knowledge of the solstices and the calendar ; i. e., the ability to compute the course of the sun and the moon ( Suk.
Later writers declare that " to him who can compute the course of the sun and the revolution of the planets and neglects to do so, may be applied the words of the prophet ( Isa.
'" To pay attention to the course of the sun and to the revolution of the planets is a religious injunction ; for such is the import of the words ( Deut.
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