56:2

And there can be no denying of its befalling.
Meaning:-
Befalls (befalling): If something bad or dangerous befalls you, it happens to you: to take place or to occur. If something unpleasant or dangerous befalls you, it happens to you.

56:8

So those on the Right Hand (i.e. those who will be given their Records in their right hands), Who will be those on the Right Hand? (As a respect for them, because they will enter Paradise).

56:9

And those on the Left Hand (i.e. those who will be given their Record in their left hands), Who will be those on the Left Hand? (As a disgrace for them, because they will enter Hell).

56:13

A multitude of those (foremost) will be from the first generations (who embraced Islam).
Meaning:-
Multitude: a large gathering of people.
Foremost: most prominent in rank, importance, or position.

56:28

They shall be among the thorn less lote trees,
Meaning:-
Lote tree may refer to: Sidrat al-Muntaha, the tree that marks the end of the seventh heaven, the boundary where no creation can pass, and beyond which is the Throne of Allah,

56:46

And were persisting in great sin (joining partners in worship along with Allah, committing murders and other crimes, etc.)
Meaning:-
Persisting: stay, continue firmly, to continue to do something.

56:65

If We willed, We could make it [dry] debris, and you would remain in wonder,
Meaning:-
Debris: The scattered remains of something broken or destroyed; rubble or wreckage