Jesus gave that warning when discussing the sign that would mark the conclusion of this wicked system of things.
‏ « اِبْقَوْا مُنْتَبِهِينَ وَمُسْتَيْقِظِينَ ،‏ لِأَنَّكُمْ لَا تَعْرِفُونَ مَتَى يَكُونُ ٱلْوَقْتُ ٱلْمُعَيَّنُ » .‏