"Between every unfaithful generation and faithful generation
is one person determined to change."

In simple words...this means
if you come from a broken past your future doesn't have to be broken.
If you decide to make the change for yourself
you are also deeply effecting your future
and the people that come into it (children, grandchildren - generations).
It takes one man's effort to change his generation.

Bible - Exodus 20 - 6
"...I lavish unfailing love for a thousand generations
on those who love me and obey my commands."