Early on the first day of the week, while it was still dark, Mary Magdalene
came to the tomb and saw that the stone had been removed from the tomb
(St. John 20:1).
The official birthday of the Church, Pentecost Sunday, also fell on the
first day of the week: Acts 2:1.
The early Christians celebrated the public worship of the Mass on Sunday:
On the first day of the week, when we met to break bread... (Acts 20:7).
Collections in support of the Church were gathered on Sunday:
On the first day of every week, each of you is to put something aside and
store it up, as he may prosper, so that contributions need not be made when
I come (1 Cor. 16:2).
St. John received his Revelation on Sunday:
I, John, your brother who share with you in Jesus the persecution...was on
the island called Patmos...I was in the spirit on the Lords day... (Rev.
1:9-10).
In response, Seventh-Day Adventists cite the following passages as proof
that the Sabbath-day was the day of worship of the early Christians:
The women who had come with him from Galilee followed, and saw the
tomb, and how his body was laid; then they returned, and prepared spices
and ointments. On the sabbath they rested according to the commandment
(St. Luke 23:55-56).
As they went out, the people begged that these things might be told them
the next sabbath. And when the meeting of the synagogue broke up, many
Jews and devout converts to Judaism followed Paul and Barnabas, who
spoke to them and urged them to continue in the grace of God. The next
sabbath almost the whole city gathered together to hear the word of God
(Acts 13:42-44).
And he argued in the synagogue every sabbath, and persuaded Jews and
Greeks. When Silas and Timothy arrived from Macedonia, Paul was