Apparently, James heard that certain members of local churches were guilty of criticizing one another, slandering one another, and judging one another, so James writes in no uncertain terms that this is wrong. I believe James is telling us that it is wrong to think we know what another person is going through or understand the pain the drives their actions. It is wrong to assume we can see a person’s heart and know their motives. It is wrong to judge another person when we have never taken the time to talk with them, weep with them or pray with them. James addresses this issue head on in verse 11 and 12.