of course ze details of zis are only relevant to us in understanding zat ziss section of land may vell be what remains of one of ze earliest continents , and still above sea level , ze brook vas called kidron and ze geography of ze land suggests zat it ze brook vould have once been a raging river , carving out ze valley vhich became such a centre of myss and prophecy , nowadays zere is only vater in ze valley vhen it rains .