It seems like indentations could be useful in a variety of circumstances, including formatting quotes of Scripture. For example, we're all familiar with how publishers often indent verses in Psalms and Proverbs.
Maybe it's just me, but IMO the following quote just doesn't look right without the second and fourth lines indented:
Yet it was the Lord’s will to crush him and cause him to suffer,
and though the Lord makes his life an offering for sin,
he will see his offspring and prolong his days,
and the will of the Lord will prosper in his hand.
I checked the C.SE help page for markdown, and I already know about forcing newlines by adding trailing spaces. Is there a way to use Markdown to add indentations within block quotes?