SQLite Inner Join with Limit on Left Table

Firstly, let me describe a scenario similar to the one I am facing; to better explain my issue. In this scenario, I am creating a system which needs to select 'n' random blog posts from a table and then get all the replies for those selected posts.

Imagine my structure like so:

blog_posts(id INTEGER PRIMARY KEY, thepost TEXT)  
blog_replies(id INTEGER PRIMARY KEY, postid INTEGER FOREIGN KEY REFERENCES blog_posts(id), thereply TEXT)

This is the current SQL I have, but am getting an error:

SELECT blog_post.id, blog_post.thepost, blog_replies.id, blog_replies.thereply 
FROM (SELECT blog_post.id, blog_post.thepost FROM blog_post ORDER BY RANDOM() LIMIT ?)  
INNER JOIN blog_replies
ON blog_post.id=blog_replies_options.postid;

Here is the error:

sqlite3.OperationalError: no such column: hmquestion.id