After his professed conversion to Christianity, Constantine still further exerted his power in behalf of the venerable day of the sun, now happily transformed into the Lord’s day, by the apostolic authority of the Roman bishop. Heylyn thus testifies:— “So natural a power it is in a Christian prince to order things about religion, that he not only took upon him to command the day, but also to prescribe the service.”[754] The influence of Constantine powerfully contributed to the aid of those church leaders who were intent upon bringing the forms of pagan worship into the Christian church. Gibbon thus places upon record the motives of these men, and the result of their action:— “The most respectable bishops had persuaded themselves that the ignorant rustics would more cheerfully renounce the superstition of paganism, if they found some resemblance, some compensation, in the bosom of Christianity. The religion of Constantine achieved in less than a century, the final conquest of the Roman Empire: but the victors themselves were insensibly subdued by the arts of their vanquished rivals.”[755] The body of nominal Christians, which resulted from this strange union of pagan rites with Christian worship, arrogated to itself the title of Catholic church, while the true people of God, who resisted these dangerous innovations, were branded as heretics, and cast out of the church. It is not strange that the Sabbath should lose ground in such a body, in its struggle with its rival, the festival of the sun. Indeed, after a brief period, the history of the Sabbath will be found only in the almost obliterated records of those whom the Catholic church cast out and stigmatized as heretics. Of the Sabbath in Constantine’s time, Heylyn says:— “As for the Saturday, that retained its wonted credit in the eastern churches, little inferior to the Lord’s day, if not plainly equal; not as a Sabbath, think not so; but as a day designed unto sacred meetings.”[756] There is no doubt that, after the great flood of worldliness which entered the church at the time of Constantine’s pretended conversion, and after all that was done by himself and by Sylvester in behalf of Sunday, the observance of the Sabbath became, with many, only a nominal thing. But the action of the council of Laodicea, to which we shall presently come, proves conclusively that the Sabbath was still observed, not simply as a festival, as Heylyn would have it, but as a day of abstinence from labor, as enjoined in the commandment. The work of Constantine, however, marks an epoch in the history of the Sabbath and of Sunday. Constantine was hostile to the Sabbath, and his influence told powerfully against it with all those who sought worldly advancement. The historian Eusebius was the special friend and eulogist of Constantine. This fact should not be overlooked in weighing his testimony concerning the Sabbath. He speaks of it as follows:—