Understanding?

 Then Job answered and said: "I have heard many such things; miserable comforters are you all. Shall windy words have an end? Or what provokes you that you answer? I also could speak as you do, if you were in my place; I could join words together against you and shake my head at you. I could strengthen you with my mouth, and the solace of my lips would assuage your pain." Job 16: 1-5

If you do not know what is happening, it's best to be silent. Silence is often one of the best ways to share someone's grief.

Talk is always easy and cheap and is often not backed up by the truth. When we speak out of ignorance, we hurt someone in our efforts to help them.

Satan works that way. Lies are his native language, and he will not hesitate to present himself as an angel of light who understands or cares and can offer real reasons for your suffering.
Satan will make it look like suffering is something you deserve because of your "sinful" lifestyle. Yet, the whole book of Job screams the opposite. One can do all things right and be in great trouble because they do things right.

There is a difference between human and divine understanding. One is anemic at best.