Do Christians and Muslims have the same ancestor?

One is faith, and the other is blood. Could it be related? . . For example, part of the Muslim family in a Middle Eastern country immigrated to a Christian country, and the descendants of this family converted to Christianity, so the descendants of this family are related to the descendants of the Muslim family without immigration, not to other Christians around them in a strict sense (of course, you can't start with Adam and Eve), so you should understand ... White people are also very different, mainly divided into Nordic and Mediterranean, and Nordic people are divided into Baltic and Balkan. The Baltic races include Atlantic people (Celts), Nordic people (Germans) and Eastern Europeans (Slavs); The sub-races in the Balkans include southern Slavs and Romanian Latins. Mediterranean people are divided into typical Mediterranean sub-races and Caucasian sub-races Typical Mediterranean sub-races are Alps (southern Germanic and Celtic-Germanic-Latin French), Mediterranean (Latin, Greek-Albanian-Armenian), Semites and Pamirs (Central Asian Aryans); Caucasian sub-races include Caucasians and West Asian Aryans (Iranians, Arabs). The ethnic origin of Arabs can be traced back to the ancient Semitic tribes, who considered themselves descendants of Ishmael. Historically related to Assyrians, Aramaics, Canaanites, Phoenicians, Hebrews (Jews) and so on.