How many hearts will be throbbing that Day?
Certain minds will be terrified
hearts will throb on that Da
Hearts that day will palpitate
Hearts (on) that day (are) palpitating/pounding
On that day the palpitation of the hearts will be the highest ever due to the fear
Many a heart will flutter on that day
On that day hearts will tremble
That Day, hearts (of the people) will pound with agony and terror
On that day many hearts will be trembling with fear
(Some) hearts that Day will shake with fear and anxiety