Because I do not believe what they teach that Catholics were the first to observe Sunday as a day of worship.
The Catholic church did not begin until the fifth century after Christ. Anyone who knows history knows that this is so. Baptists are not Protestants - we did not come out of the Catholic Church - The Catholic Church came out of us.
Baptist today are not all they ought to be. Some of them are so far from the truth that they will never get back, but the Baptist churches were the first churches of the Lord Jesus Christ.
It has not always been known by the name "Baptist," but the early Christians believed just what we believe, that all men are saved by faith, that no group or organization within or without it has any jurisdiction over it. That was the New Testament Church.
Now, who did start the observance of the first day of the week as the day of worship? "Now upon the FIRST DAY OF THE WEEK, very early in the morning, they came unto the sepulcher, bringing the spices which they had prepared and certain others with them" (Luke 24:1)
It is rather interesting that the Lord Jesus arose on the first day of the week. The devil is shrewd. He would be happy if he could get God's people to abolish the Lord's day as a day of worship... it would be a tremendous victory for him. If I worship on Saturday, so far as I am concerned, I might as well worship Christ on the crucifix. The risen Lord appeared to the disciples on the first day of the week. Why did He not appear on the sabbath?
"The same day at evening, being the first day of the week...came Jesus and stood in the midst, and said unto them, Peace be unto you." (John 20: 19)
The early disciples of the risen Lord worshiped Him on the first day of the week, and you will search the New Testament in vain for one instance where the New Testament Christians worshiped on the old Jewish Sabbath.
And there is another interesting fact. The early Christians gathered together their offerings on the first day of the week.
"Upon the first day of the week let every one of you lay by him in store as God has prospered him, that there be no gatherings when I come" (I Cor. 16:2)
Why not on the seventh day? Adventists say that when we worship on Sunday we are worshipping on a heathen day because Sunday means "the day of the' sun." Every one of the days of the week are named after a heathen deity:
Sunday means "The Day of the Sun";
Monday means "Day Sacred to the Moon";
Tuesday means "Day of Mars";
Wednesday means "Woden Day";
Thursday is named for Thor, the "God of Thunder";
Friday means "day of sacred Frigg";
Saturday means "Saturn's Day"; this is the Jewish Sabbath.
Because, to me, the first day of the week has a greater significance for this gospel age than the seventh. Not one time does God ever command a believer to observe Saturday.
... Sunday is our day of worship, and there is a reason. Keeping the sabbath won't save you. Baptism won't save you. Good works won't save you. Joining a church won't save you. The Lord Jesus Christ, and He alone, is the Savior of every sinner. There is no other way. Hell is filled with people who have joined the church and tried to keep the law, but have spurned the Lord Jesus and His cleansing blood. (Eph. 2:8-9).
Seventh Day Adventists deny the resurrection by observing the Sabbath. We come to church on Sunday, the Lord's day, to worship Him who "died for our sins, and rose again for our justification." We worship a living Savior, and with thanksgiving sing: "He lives, He lives, Christ Jesus lives today!"
If I worship Christ on Saturday I deny that His work
is finished, that He is a resurrected, living Savior.