“For the Son of man is Lord even of the sabbath day.”
“Let every one that loves Christ keep holy the Lord’s day–,the queen of days, the resurrection day, the highest of all days.” Ignatius, Bishop of Antioch, A.D. 101
“On the Lord’s day, every one of us Christians keeps the Sabbath.” Irenaeus, Bishop of Lyons, who also lived in the second century, and who was a disciple of Polycarp, who was a companion of apostle John, speaks of the Lord’s Day as the Christian Sabbath.
“A Christian, according to the command of the gospel, observes the Lord’s day, thereby glorifying the resurrection of the Lord.” Clement of Alexandria
- Are We Required to Attend Church on Sundays? (kevinwilkening.wordpress.com)