And denied Our verses with [emphatic] denial. (78:28)

Almuntakhab Fi Tafsir Alquran Alkarim

and Our revelations and signs they charged with falsehood and insolently did they negate

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(78:28) and roundly denied Our Signs as false. *17

And denied Our verses with [emphatic] denial. meaning

*17) This is the reason for which they will deserve this dreadful penalty of Hell. Firstly, they lived in the world thinking that the time will never come when they will have to appear before God and render an account of their deeds; second, that they utterly refused to accept and acknowledge the Revelations that Allah had sent through His Prophets for their instruction and treated them as falsehood.
 

And denied Our verses with [emphatic] denial. meaning in Urdu

اور ہماری آیات کو انہوں نے بالکل جھٹلا دیا تھا