you're kidding right?
Ummm... try reading Chapter 7 verse 28. You think in 5:2 "he opened up his mouth and taught them" refers only to the disciples??
The disciples weren't anymore saved at that time than the crowd was. Several of them may not have even been true believers at that time. The Holy Spirit lived in none of them. Many in the crowd may have eventually been believers who received the Holy Spirit too. I think you're making a silly assumption.
The outer ring that listened to the teaching , but they were not the target
Mat 5:1 And seeing the multitudes, he went up into a mountain: and when he was set, his disciples came unto him: Mat 5:2 And he opened his mouth, and taught them, saying,
If you remember how to diagram a sentence , the "them" refers back to the disciples.
There are unsaved people that think "keeping" the beatitudes will get them into heaven , when in fact they flow from our salvation (like the works in James)
Mat 5:48 Be ye therefore perfect, even as your Father which is in heaven is perfect.
God is the Father to the saved, not the unsaved. The unsaved can never obey this command
I do not think that you can assume the disciples were not saved. Jesus intentionally drove off the non elect from his disciples. He kept all those the father gave Him. It says that they were all astonished at his doctrine, but it said nothing of them following Him does it?
Jesus was a curiosity to most , not the saviour
As for the audience..they were the same ones that yelled crucify him