Original Text
And the remaining four come forth on the side of the north to their own sea, <two of them> to the Erythraean Sea, and two into the Great Sea and discharge themselves there [and some say: into the desert].
Simple English
The other four rivers flow out from the north side to their own sea. Two of them go to the Red Sea, and two go to the Mediterranean Sea, emptying into them. Some say they flow into the desert instead.