How do we know that this final lesson has been enough to make Scrooge commit to changing

It's been enough for him.

Explanation:

Scrooge learns the truth about the value of his life as it applies to other people. He does very kind things for bob understanding his situation and being guilty for all he has mistreated him for. The "Ghost of Christmas Yet To Come", is that when the final tally is taken, his life, in the eyes of his fellow man, will be worth nothing.

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,

the publisher is the publishing date is the author is

united states of america . . 1942 . . t. s. eliot

houghton mifflin company . . 2002 . . gregory stock

houghton mifflin company . . 1942 . . t. s. eliot

houghton mifflin company . . 2002 . . robert overholtzer