Jesus was Jewish. And one could say that there is even some direct connections between Judaism and Islam, notions of not eating pork, notions of halal and kosher, ideas of circumcision. And one could even argue that Judaism and Islam also have close ties to Zoroastrianism. A very ancient monotheistic religion, and Cyrus the Great of Persia was the one who really spread Zoroastrianism. And he's considered a messiah amongst the Jewish people because he liberated them from the Babylonian captivity, helped them resettle in Jerusalem, and helped rebuild the temple at Jerusalem. Zoroastrianism also has ties to Islam. Zoroastrians pray five times a day, just like Muslims.