After introducing the infidels and hypocrites in some details in the preceding verses, eventually comes the order of treating them hardly and with severity and fight. When sinning and evil deeds reaches a stage where the doors of forgiveness are closed, the final remedy to cure the society's disease, and clear it from evil, is to combat evil and hypocrisy, and to strive severely against their hosts. To fight with the infidels and heatens was clear a job, because their line and position was distinct from that of the believers. But the hypocrites were mixed with the believers and they lived among them claiming to be of the believers, and so it was difficult to know and make distinct who was who! Therefore the combat against the hypocrites had to be otherwise and in a different manner. FIGHT WITH INFIDELS AND HYPOCRITES (VERSE NO. 73)