Iyov 2:11-13

Now when the three friends of Iyov heard of all this ra'ah that had come upon him, they came every one from his own place; Eliphaz the Temani, and Bildad the Shuchi, and Tzophar the Na'amati; for they had made an appointment together to come to sympathize with him and to comfort him. And when they lifted up their eyes afar off, and recognized him not, they lifted up their voice, and wept; and they made the keri'ah every one on his mantle, and sprinkled dust upon their heads toward Shomayim. So they sat [shiva] with him upon the ground shivat yamim and shivat lailah, and none spoke a word unto him; for they saw that his suffering was very great.