Christians hear many conflicting claims about the Sabbath and Sunday. Some say God changed the day of rest, others insist the Sabbath remains unchanged, and many simply follow tradition without knowing the biblical foundation. This study examines the evidence directly from Scripture—what Jesus taught, what the apostles practiced, and what God actually commands for His people today.
Last updated: February 2026
Many theologians claim that the time of rest was changed from the Saturday Sabbath to Sunday, the so‑called Lord’s Day, because Jesus was resurrected on a Sunday. But where is the biblical authority for this claim? A significant event occurring on a certain day does not automatically change God’s law regarding the seventh‑day rest.
Most Christians believe Jesus died on Good Friday, the day before the Saturday Sabbath. His death brought salvation — yet no one suggests Friday should become the new day of rest. The Lord’s Supper occurred on Thursday — yet no one claims Thursday should be the Christian rest day. These events are deeply important, but none of them authorize changing the fourth commandment.
Another common argument is that the Saturday Sabbath was only for the Jews. But Scripture shows the Sabbath existed long before Israel:
“And on the seventh day God ended His work… and He rested… Then God blessed the seventh day and sanctified it.” (Genesis 2:2–3)
Jesus also affirmed this truth:
“The Sabbath was made for man…” (Mark 2:27)
Not for Jews only — but for all humanity.
A popular argument is that Sunday is the true Christian day of rest because Jesus rose on that day. Yet Scripture never calls Sunday “the Lord’s Day.” Some point to Revelation 1:10:
“I was in the Spirit on the Lord’s Day…”
But this verse does not mention Sunday, worship, or rest. It refers to the prophetic “Day of the Lord,” a theme found throughout Scripture. Jesus Himself clarified which day He is Lord of:
“Therefore the Son of Man is Lord also of the Sabbath.” (Mark 2:28)
Scripture consistently identifies the Saturday Sabbath — not Sunday — as the day belonging to the Lord.
“The first day of the week… the disciples were assembled… for fear of the Jews…” (John 20:19)
Some interpret this as a Sunday worship service. But Scripture says nothing about worship here. In fact, the disciples did not even believe Jesus had risen yet:
“He rebuked their unbelief… because they did not believe those who had seen Him after He had risen.” (Mark 16:14)
They were not celebrating the resurrection — they were hiding in fear. This was not a worship service, and it certainly was not a weekly Sunday gathering.
“On the first of the week… the disciples came together to break bread…”
Many assume this was a Sunday morning worship service with communion. But “breaking bread” simply means sharing a meal — a common expression throughout Scripture.
More importantly, this gathering occurred on what we call Saturday evening. In the Bible, days begin at sunset:
“The evening and the morning were the first day.” (Genesis 1:5)
Therefore, “the first day of the week” began at sunset on Saturday. Paul spoke until midnight, then departed the next morning — Sunday morning — a regular workday, not a day of rest.
This was a Saturday evening meeting, not a Sunday worship service.
“On the first day of the week let each one of you lay something aside…”
This verse is often assumed to describe a Sunday church offering. But Paul simply instructed believers to set aside food or goods at home so that no collection would be needed when he arrived.
The phrase “first day of the week” is translated from the Greek mia sabbaton — literally “one Sabbath.” This refers to the Saturday Sabbath, not Sunday.
Paul was not describing a worship service at all — just private preparation for helping the poor in Jerusalem.
Scripture never commands rest or worship on Sunday. The Bible consistently points to the Saturday Sabbath as God’s holy day of rest.
Scripture never calls Sunday the Lord’s Day. It never commands Christians to rest on Sunday. It never replaces the seventh‑day Sabbath with the first day of the week.
Jesus said He is Lord of the Sabbath — the day God made holy at creation.
What you do with this truth is between you and God. You can follow tradition and rest on Sunday, or you can follow Scripture and honor the day God set apart — the Saturday Sabbath.
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Lord's Day: Is It Sunday Or Saturday?
No. Scripture never refers to Sunday as the Lord’s Day.
No. Jesus affirmed the Sabbath and never changed it.
No. It refers to the prophetic Day of the Lord, not a weekly day of worship.
No. It was a Saturday evening meal and discussion.
No. It refers to private preparation, not a church service.
Studies are prepared by the Gateway to Jesus Ministry Team, a group of seminary trained ministers with more than 20 years of experience in biblical teaching and evangelism.
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