Latin paragraph translation help?

Where men passed out of life, their souls were led by the God Mercury to the underworld, the seat of the dead. Of this region, which is said to have been under the earth, Pluto was king, whose wife was Proserpine, the daughter of Jupiter and Ceres. Then, led by Mercury, the shades of the dead came first to the bank of the river Styx, which contained the kingdom of Pluto. It was necessary that all who came to the underworld cross this river.