NET
12 You should not have gloated when your relatives suffered calamity. You should not have rejoiced over the people of Judah when they were destroyed. You should not have boasted when they suffered adversity.
Darby
12 But thou shouldest not have looked on the day of thy brother in the day of his disaster; neither shouldest thou have rejoiced over the children of Judah in the day of their destruction; nor have opened wide thy mouth in the day of distress.
KJV
12 But thou shouldest not have looked on the day of thy brother in the day that he became a stranger; neither shouldest thou have rejoiced over the children of Judah in the day of their destruction; neither shouldest thou have spoken proudly in the day of distress.