Overall meaning : When the resurrection comes with its deafening mighty blast (the second blowing of the Trumpet), every person, on that day, will flee from his own siblings, and even his mother and his father, and yet even his spouse and his children. Each one of these relatives, on Resurrection Day, will have enough concern of his own to make him indifferent to the others!
The believers’ faces, on that day, will be shining bright with happiness, laughing and joyful; and the unbelievers’ faces, on that day, will be covered with dust and will darken with gloom and grief—these are the unbelievers, the wicked sinners.