they are:
Judaism and Christianity.
That might refer to Abraham.
Abraham
JudaismChristianityIslam
Abraham fathered these religions: Judaism, Islamic and Christianity
Abraham
Abraham, the father of three religions was a tent dweller. See related links for information on Abraham
Islam, Christianity & Judaism all consider Abraham & Moses to be prophets of God. Moses is also considered a prophet in Mormonism.
The common ancestor of the three religions Judaism, Christianity and Islam was Abraham
Judaism, Islam, and Christianity.
We are all linked as Abraham is the father of all three religions.
It's untrue to say that they're all polytheistic.