Job 2:13
So they sat down with him on the ground seven days and seven nights, and none spoke a word to him, for they saw that his grief was very great.
WEB
So they sat down with him upon the ground seven days and seven nights, and none spake a word unto him: for they saw that his grief was very great.
KJV
What Job 2:13 means
Job's three friends are so overwhelmed by his suffering that they sit with him on the ground for seven days without saying a word.
Job has just lost his children, his wealth, and his health in a matter of days. Three friends travel from their own lands to comfort him, and when they see how bad things are, words fail them. They sit down beside him on the ground and stay there, silent, for a week.
In the world of the story, sitting with a mourner in silence was itself an act of grief and solidarity. It is the one thing Job's friends get right. Everything they say afterward, trying to explain why this happened to him, only deepens the wound, and by the end of the book God tells them they were wrong to do it. The verse is remembered as a picture of what comfort looks like before anyone speaks.