Can someone help me understand what this means?

Question

anonymous · Answer

“And to the sluggish clod, which the rude swain
        Turns with his share, and treads upon. The oak
        Shall send his roots abroad, and pierce thy mold.
        Yet not to thine eternal resting-place
        Shalt thou retire alone—nor couldst thou wish
        Couch more magnificent.”

anonymous · Answer

That is a mouth full... Well I don't know about "And to the sluggish clod, which the rude swain Turns with his share, and treads upon." But "Yet not to thine eternal resting-place" could mean he is going to his eternal resting place;hell. And retire alone, death. Couch means to lay yourself down for rest, so whoever this was written to he was laying himself down to rest or to die beneath an oak tree. 
This is a mess I know but I hope I helped.