The reigns of Pertinax and Julian, the Emperors next in succession after Commodus, amounted together only to a few months; and the faithful had meanwhile to struggle with many discouragements; [296:4] but these short-lived sovereigns were so much occupied with other matters, that they could not afford time for legislation on the subject of religion.  Septimius Severus, who now obtained the Imperial dignity, was at first not unfriendly to the Church; and a cure performed on him by Proculus, a Christian slave, [297:1] has been assigned as the cause of his forbearance; but, as his reign advanced, he assumed an offensive attitude; and it cannot be denied that the disciples suffered considerably under his administration.  As the Christians were still obliged to meet at night to celebrate their worship, they were accused of committing unnatural crimes in their nocturnal assemblies; and though these heartless calumnies had been triumphantly refuted fifty or sixty years before, they were now revived and circulated with fresh industry. [297:2] About this period, Leonides, the father of the learned Origen, was put to death.  By a law, promulgated probably in A.D. 202, the Emperor interdicted conversions to Christianity; and at a time when the Church was making vigorous encroachments on heathenism, this enactment created much embarrassment and anxiety.  Some of the governors of provinces, as soon as they ascertained the disposition of the Imperial court, commenced forthwith a persecution; and there were magistrates who proceeded to enforce the laws for the base purpose of extorting money from the parties obnoxious to their severity.  Sometimes individuals, and sometimes whole congregations purchased immunity from suffering by entering into pecuniary contracts with corrupt and avaricious rulers; and by the payment of a certain sum obtained certificates [297:3] which protected them from all farther inquisition. [297:4] The purport of these documents has been the subject of much discussion.  According to some they contained a distinct statement to the effect that those named in them had sacrificed to the gods, and had thus satisfied the law; whilst others allege that, though they guaranteed protection, they neither directly stated an untruth, nor compromised the religious consistency of their possessors.  But it is beyond all controversy that the more scrupulous and zealous Christians uniformly condemned the use of such certificates.  Their owners were known by the suspicious designation of “Libellatici,” or “the Certified;” and were considered only less criminal than the “Thurificati,” or those who had actually apostatised by offering incense on the altars of paganism. [298:1]