It is not even accurate to say that Christianity eventually broke away from Judaism. It is more accurate to say that, out of that matrix of biblical Judaism and that maelstrom of late Second-Temple Judaism two great traditions emerged: early Christianity and rabbinic Judaism. Each claimed exclusive continuity with the past, but in truth each was as great a leap and as valid a development from that common ancestry as was the other. They are not child and parent; they are two children of the same mother. So, of course, were Cain and Abel. (xxxiii)
The Birth of Christianity, John Dominic Crossan
A powerful whirlpool, originally (usu. Maelstrom) one in the Arctic Ocean off the west coast of Norway, which was formerly supposed to suck in and destroy all vessels within a wide radius.
[ from early modern Dutch maelstrom (now maalstroom), a whirlpool, from malen to grind, to whirl round (compare meal) + stroom, a stream n.