Job 2:11Now when Job’s three friends heard of all this evil that had come upon him, they came each from his own place, Eliphaz the Temanite, Bildad the Shuhite, and Zophar the Naamathite. They made an appointment together to come to show him sympathy and comfort him.
And they sat with him on the ground seven days and seven nights, and no one spoke a word to him, for they saw that his suffering was very great.
It is really a duty of friends to go to a grieving / hurting friend to comfort, sympathize with them. It does not always mean saying something. Silence is ok at times, the presence of friends is a good comfort in itself.
At times there are no appropriate words that can be said.
Sometimes we make comments because we dislike, or get nervous, in silence. Our presence can mean more than any words spoken on our own.
Waiting on God to give the appropriate words is a blessing in itself.