elsewhere , he stated : nicolaus of damascus , in the fourth book of his history , says thus : `` abraham reigned at damascus , being a foreigner , who came with an army out of the land above babylon , called the land of the chaldeans : but , after a long time , he got him up , and removed from that country also , with his people , and went into the land then called the land of canaan , but now the land of judea , and this when his posterity were become a multitude ; as to which posterity of his , we relate their history in another work .