It will be only one shout, and at once they will be (37:19)

Almuntakhab Fi Tafsir Alquran Alkarim

All it takes is only one single loud call inciting to action and there they get up and rise from bed and be able to look around

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

(37:19) There will be a single stern rebuff and lo, they will be observing with their own eyes (all that they had been warned against). *12

It will be only one shout, and at once they will be meaning

*12) That is, "When the time comes for this, it will not be difficult to reestablish the whole world. Just a single shout will be enough to make the people to wake up. Here, the word "shout" or "cry" is very meaningful. It depicts the Resurrection as though the people who had died since the beginning of the creation till the last Day, were lying asleep, and a sudden command to them to "wake up" will cause them to rise up all at once."
 

It will be only one shout, and at once they will be meaning in Urdu

بس ایک ہی جھڑکی ہو گی اور یکایک یہ اپنی آنکھوں سے (وہ سب کچھ جس کی خبر دی جا رہی ہے) دیکھ رہے ہوں گے