How does a man become a Hebrew? He leaves the kingdom of his birth and becomes wholly Yehovah's man. A man can only serve one master.
http://www.weareisrael.org/torah-102/who-is-yehovah/hebrew/
My goal is always to promote Yehovah's image and kingdom in the earth; and to that end I began my http://weareisrael.org/ website 5 years ago. I have hundreds of articles on a large variety of topics for those who are new to Torah and for those who have studied it for many years. Please visit there now.