What is the lesson of Harry Potter and the Deathly Hallows part1?

Answer 1

I think we can take many messages, the main ones being:

Loyalty:

Loyalty to friends, loyalty to family, loyalty to heroes, loyalty to your community and loyalty to your destiny.

Ron discovers the meaning of loyalty to friends when he initially leaves his two friends in favour of comfort. He feels guilty and returns later.

Remus Lupin discovers the meaning of loyalty to family when his offer to join the trio is rejected by Harry, who feels that it is wrong to leave family - namely, his wife and their unborn child - to seek anything, particularly when your time with them is so often cut short by tragic accidents. Lupin soon sees this and comes to thank Harry for it

Harry discovers the meaning of loyalty to heroes, community and destiny when he sets out on his quest. He knows that he must complete it to get rid of the danger to his community, to follow in the footsteps of his hero and to complete his destiny.