Bishop Khalid Pervaiz, Bishop of United Pentecostal Church in Pakistan, preaching about The Major Cause of Sins in Church in a Seminar on 14 August, 2013. Seminar was held by Glorious United Pentecostal Church in Karachi. Pastor Shamshad Inayat Specially invited Bishop Khalid Pervaiz from Islamabad for preaching and teaching.