They calculated that there would be no trial (of them as a result of what they did), and so became as if blind and deaf (to truth and all Divine admonitions). Then God (having guided them to waken their consciences, and turn to Him in repentance so that they could reform themselves) relented towards them (in gracious forgiveness). Then (again, in spite of that) many of them became as if blind and deaf. And God sees well all that they do.