next to > immediately after; _the arrangement is:
FRONT Sloth Gluttony
Avarice Lechery
Envy Wrath
Satan
BACK Lucifera_
2 Upon a bearded goat, whose rugged hair
rugged > shaggy
3 And wall eyes (the sign of jealousy),
wall > whitely opaque; glaring
4 Was like the person himself whom it did bear:
Was like > [Resembled those of]
5 Who, rough and black, and filthy, did appear
appear > (Or "appear:", meaning "seem", "present himself to view")