From this it appears that the so-called Lord's day was a day of greater mirth than the other days of the week. In book v., section 3, paragraph 14, it is said:-- "But when the first day of the week dawned he arose from the dead, and fulfilled those things which before his passion he foretold to us, saying: 'The Son of man must continue in the heart of the earth three days and three nights.'" In book v., section 3, paragraph 15, the writer names the days on which Christians should fast:-- "But he commanded us to fast on the fourth and sixth days of the week; the former on account of his being betrayed, and the latter on account of his passion. But he appointed us to break our fast on the seventh day at the cock-crowing, but to fast on the Sabbath day. Not that the Sabbath day is a day of fasting, being the rest from the creation, but because we ought to fast on this one Sabbath only, while on this day the Creator was under the earth." In paragraph 17, Christians are forbidden to "celebrate the day of the resurrection of our Lord on any other day than a Sunday." In paragraph 18, they are again charged to fast on that one Sabbath which comes in connection with the anniversary of our Lord's death. In paragraph 19, the first day of the week is four times called the Lord's day. The period of 40 days from his resurrection to his ascension is to be observed. The anniversary of Christ's resurrection is to be celebrated by the supper. "And let this be an everlasting ordinance till the consummation of the world, until the Lord come. For to Jews the Lord is still dead, but to Christians he is risen: to the former, by their unbelief; to the latter, by their full assurance of faith. For the hope in him is immortal and eternal life. After eight days let there be another feast observed with honor, the eighth day itself, on which he gave me, Thomas, who was hard of belief, full assurance, by showing me the print of the nails, and the wound made in his side by the spear. And again, from the first Lord's day count forty days, from the Lord's day till the fifth day of the week, and celebrate the feast of the ascension of the Lord, whereon he finished all his dispensation and constitution," etc. The things here commanded can come only once in a year. These are the anniversary of Christ's resurrection, and of that day on which he appeared to Thomas, and these were to be celebrated by the supper. The people were also to observe the day of the ascension on the fifth day of the week, forty days from his resurrection, on which day he finished his work. In paragraph 20, they are commanded to celebrate the anniversary of the Pentecost. "But after ten days from the ascension, which from the first Lord's day is the fiftieth day, do ye keep a great festival; for on that day, at the third hour, the Lord Jesus sent on us the gift of the Holy Ghost."