The answer is Abraham
Explanation:
The Islam, Judaism and the Christianism are three monotheistic religions that emerged during Ancient times and that despite promoting different practices, beliefs and ideas have common aspects. This includes the belief in Abraham which is considered as the father or patriarch of the three religions, because in the case of the Islam Abraham is one of the most important prophets, in the case of Christianity he represented a model believer, and in the case of the Judaism God approached to him and promised the Land of Israel, which makes Abraham be considered as the father of each of these religions for different reasons but especially because due to his actions each religion was somehow founded.
