Right from the strart the reader can understand satan's pride and his hate towards god.

he isn't defeated by god:"all is not lost".with lines 2 3 4 milton does a list of things that santan doesn't lost: the unconquerable will, study of revenge, immortal hate,courage.he does this list through an anaphora and through a personification to uderline that his hunt is useless and he continues to be the same, he doesn't change even he is in hell and his felling of hate doesn't diminish.

with line 6 the reader understand the incapacity of satan to be submited.nobody can keep

the glory to submit him neither god:"that glory never shall.." after that he asks himself as a

retorical question if he must kneel down and implores pity,he knows the answer and he says that this should be vile and shy and it should be worse than downfall.Like a true hero, Satan refers to conquest and courage, a response to the tyranny he and his cohorts have received from the hand of God.subsequently he shows the quality he has and his power that he doesn't lose :"since through experience/in arm not worse..in foresight .." he becames a sort of palmist , he has more hopes to defeat and make war on god " our grand foe".

God alone reign and triumphs and he keeps heaven under his tyranny.He compares gos to a tyranny.with verse 19 and 20 the reader can userstand that god thinks he has defeated Lucifer instead the lost archangel is ready to make war on god: the eternal war.