that > [Agdistes]

4 The foe of life, that good envies to all,

envies > begrudges

5 That secretly does us procure to fall,

procure > cause

6 Through guileful semblants, which he makes us see.

semblants > outward aspects, semblances

7 He of this garden had the governail,

governail > management

8 And Pleasure's porter was devised to be,