Valerian, who had treated the Christians so cruelly, came to a miserable end. He led his army into Persia, where he was defeated and taken prisoner. He was kept for some time in captivity; and we are told that he used to be led forth, loaded with chains, but with the purple robes of an emperor thrown over him, that the Persians might mock at his misfortunes. And when he had died from the effects of shame and grief, it is said that his skin was stuffed with straw, and was kept in a temple, as a remembrance of the triumph which the Persians had gained over the Romans, whose pride had never been so humbled before. When Valerian was taken prisoner, his son Gallienus became emperor (A.D. 261). Gallienus sent forth a law by which the Christians, for the first time, got the liberty of serving God without the risk of being persecuted. We might think him a good emperor for making such a law; but he really does not deserve much credit for it, since he seems to have made it merely because he did not care much either for his own religion, or for any other. And now there is hardly anything to be said of the next forty years, except that the Christians enjoyed peace and prosperity. Instead of being obliged to hold their services in the upper rooms of houses, or in burial-places under ground, and in the dead of night, they built splendid churches, which they furnished with gold and silver plate, and with other costly ornaments. Christians were appointed to high offices, such as the government of countries; and many of them held places in the emperor's palace. And, now that there was no danger or loss to be risked by being Christians, multitudes of people joined the Church who would have kept at a distance from it if there had been anything to fear. But, unhappily, the Christians did not make a good use of all their prosperity. Many of them grew worldly and careless, and had little of the Christian about them except the name; and they quarrelled and disputed among themselves, as if they were no better than mere heathens. But it pleased God to punish them severely for their faults; for at length there came such a persecution as had never before been known. At this time there were no fewer than four emperors at once; for Diocletian, who became emperor in the year 284, afterwards took in Maximian, Galerius, and Constantius, to share his power, and to help him in the labour of government. Galerius and Constantius, however, were not quite so high, and had not such full authority, as the other two. Galerius married Diocletian's daughter, and it was supposed that both this lady and the empress, her mother, were Christians. The priests and others, whose interest it was to keep up the old heathenism, began to be afraid lest the empresses should make Christians of their husbands; and they sought how this might be prevented.