sternly > fiercely bespoke > addressed
5 "Sir knight, that do your voyage rashly make
voyage > journey (an appropriate catachresis for the "Sea-nymphes sonne")
6 By this forbidden way in my despite,
my despite > defiance of me
7 Nor do by others' death example take,
example > warning
8 I read you soon retire, while you have might,
read > advise soon > immediately [to] you have might > you have the strength to do so; also: you can
9 Lest afterwards it be too late to take your flight."