Besides Sunday, at least in Tertullian’s time, the liturgy was performed on Wednesday and Friday, the so-called Station Days. In the East, on the other hand, it was performed only on Saturdays, at least in many places.[11] To put on one’s best clothes for attendance at worship was a custom of the heathen, which the Christians retained, and which has survived to the present day.[12] As to the grounds for celebrating Sunday, the Fathers are unanimous from the earliest times—it was kept as a festival because Christ rose again on the first day of the Jewish week.[13] A clear indication of this is given by the practice observed in Jerusalem in the fourth century of reading at the psalmody on each of the Sundays in Quinquagesima, the Gospel of the resurrection of Jesus.[14] The first Christian Emperor did his best to promote the observance of Sunday and to show it all respect as a day of prayer. He gave leave to the Christian soldiers of his army to be absent from duty in order that they might attend divine service. The heathen soldiers, however, had to assemble in camp without their arms, and offer up a prayer for the Emperor and his family.[15] Eusebius, in his “Life of Constantine,” mentions in detail these pious endeavours of the Emperor, yet his information must have been incomplete, since Sozomen[16] informs us that Constantine also forbade the law-courts to sit on Sunday. It has been attempted to throw doubt on the veracity of this information because of the silence of Eusebius; but Sozomen was an advocate, and must have been better up in the existing legislation than Eusebius, and, moreover, a clear grasp of the point at issue along with a lucid representation of all the facts concerned is not one of the excellences of Eusebius. The information given by Sozomen is further supported by the fact that a law of Constantine’s directed to the same end is in existence.[17] The prohibition of the transaction of legal business on Sunday was frequently renewed by his successors, and extended so as to suspend the courts of arbitration, and to prohibit summonses for debt.[18] A law of Valentinian II., in A.D. 425, forbade games in the Circus, and all theatrical representations on Sunday. To the honour of the Emperors it must be said that they suppressed these representations more than once.[19] The Emperor Leo also renewed the law concerning the Sunday rest, and went so far as to forbid music on Sundays,[20] but his law is not included in the general collection of statutes, having been repealed after a short time.