Where did we hear this term "God of their fathers?"
1 Chronicles 5:25-26 (KJV)
25 And they transgressed against the God of their fathers, and went a whoring after the gods of the people of the land, whom God destroyed before them.
26 And the God of Israel stirred up the spirit of Pul king of Assyria, and the spirit of Tilgathpilneser king of Assyria, and he carried them away, even the Reubenites, and the Gadites, and the half tribe of Manasseh, and brought them unto Halah, and Habor, and Hara, and to the river Gozan, unto this day.
Daniel 11:37 (KJV)
37 Neither shall he regard the God of his fathers, nor the desire of women, nor regard any god: for he shall magnify himself above all.
This proves that the anti-Christ will be of Hebrew ancestry. We need to remember Ishmaelites are descendants from an Egyptian mother and Hebrew father... Hagar and Abraham. So to claim he is Hebrew would be true but also he could claim to be a descendant of Ishmael. Therefore satisfying both nations so they will worship the anti-Christ.