That Day shall a man flee from his brother. And from his mother and his father. And from his wife and his children.
meaning, he will see them and then flee from them, and seek to get away from them because horror will be so great and the matter will be so weighty.
There is an authentic Hadith related concerning the intercession that states that every one of the great Messengers of firm resolve will be requested to intercede with Allah on behalf of the creation, but each of them will say,
"O myself!
O myself!
Today I will not ask You (O Allah) concerning anyone but myself."
Even `Isa bin Maryam will say,
"I will not ask Him (Allah) concerning anyone but myself today. I will not even ask Maryam, the woman who gave birth to me."
Thus, Allah says,
يَوْمَ يَفِرُّ الْمَرْءُ مِنْ أَخِيهِ
وَأُمِّهِ وَأَبِيهِ
وَصَـحِبَتِهُ وَبَنِيهِ
That Day shall a man flee from his brother, and from his mother and his father, and from his wife and his children.
Qatadah said,
"The most beloved and then the next most beloved, and the closest of kin and then the next closest of kin -- due to the terror of that Day."
Allah said,
لِكُلِّ امْرِيٍ مِّنْهُمْ يَوْمَيِذٍ شَأْنٌ يُغْنِيهِ