aramäisch astrologie astronomy calendar calendrierjuif chronologie chronologiejuive chronology criticism crititque days deadseascrolls dode-zeerollen fastsandfeasts frühjudentum interpretation interprétation jewish jewishastronomy jewishchronology judaism kalender lagb'omer manuscritsdelamermorte midrash nature ninthofav passover presenceofgod qumrantexte religiousaspects rezeption seasons shavuot spirituallife tierkreiszeichen