“The Son of Man is lord even of the Sabbath.” (Mark 2:28) St. Augustine used what Jesus said—“Come to me, all you that re weary and are carrying heavy burdens, and I will give you rest” (Matthew 11:28)—to interpret the notion of “rest” in the New Testament and to replace the concrete sense of “rest” in the Old Testament. St. Thomas also said, “The Sabbath comes from the rest that Jesus gave to our hearts and souls.” (Translated from no. 499 of a Chinese Bible commentary) Hence, we can see from the instructions of the early Church fathers that the real “rest” is living in Christ. After Jesus’ ascension, in the early days of the church, Christian Jews still followed Jewish practices regarding the Sabbath. In a council of the apostles, it was determined that the first day of a week is the Lord’s Day, which was to commemorate the resurrection of our saviour the Christ. Thus, the Christian life has its core in Christ. When he was imprisoned in Rome, St. Peter wrote to the faithful: “[Y]ou must make every effort to support your faith with goodness, and goodness with knowledge, and knowledge with self-control, and self-control with endurance, and endurance with godliness, and godliness with mutual affection, and mutual affection with love.” (2 Peter 1:5-7) “For in this way, entry into the eternal kingdom of our Lord and Saviour Jesus Christ will be richly provided for you.” (2 Peter 1:11) Our real rest is living in Christ’s light and fire of love. “Lord, to whom should we go for not only are you the lord of the Sabbath, you are our lord.”