I would have to agree. Please consider:
So, yes, I would have to agree with suzy that the Sermon on the Mount is directed only to believers, in particular His disciples.
Thank you for providing the bible verses in your post. A common thread throughout Jesus’s teaching is his instructions to his disciples. Consider the miracles. Why did Jesus perform miracles? Who was His primary audience? Jesus often spoke in ways that the general audience could not understand.
I must thank you both for the impetus to revisit the Sermon and its accompanying Lucan Sermon in depth.
The Sermons are directed at:
1. The disciples
2. The crowd of believers
3. The world in general
and different passages apply to each. Thank you.