[stfassisi]

Sounds like Bishop Sheen thought the Beatitudes, like the cross of Calvary, were addressed to all those who believe in Christ, not just to the Apostles.

In the end only the Apostles had the TRUE faith..

As a result of this, many [of] his disciples returned to their former way of life and no longer accompanied him. John 6:66

[kosta50]

In the end only the Apostles had the TRUE faith

Right. The Sermon was to the disciples and to all those following in their faith, the one holy, catholic and apostolic Church. At the time of the Sermon, the only ones to be taught were the disciples (μαθητης), a learner, trainee, student.