ISB ~ Acts 20 v7

first day of the week:The day following the Saturday Sabbath (Gen 2:3). This passage provides the earliest evidence that believers assembled on Sundays for catechetical instruction and sacramental worship. It was soon called the “Lord’s day” (Rev 1:10) to commemorate the day Jesus rose from the dead (Lk 24:1; CCC 1343).

• The sequence of apostolic preaching (20:7) followed by a eucharistic celebration (20:11) reflects the essential structure of Christian liturgy, where Christ comes to us in word and sacrament. See note on Lk 24:30.