I understand the difference between devotion and worship.I think you're misunderstanding the argument. We should devote ourselves to God 365/24/7 but many people misunderstand worship from devotion. Jesus related worship to obedience to the commandments of God quoting directly from the Ten Commandments Mat15:3-14 Mark7:7-13.
The Sabbath is about resting from our works and labors and keeping the entire day holy by focusing on God. Exo20:8-11 Isa58:13 God does not want us stressed out and working 24/7 - its impossible to take a Sabbath 7 days a week one because God only said the Sabbath is on the seventh day Exo20:10 this is God from heaven, coming down and personally writing out these words, not Moses. Exo31:18 Exo32:16
To say this doesn't matter the day I believe we will all have to be accountable to God because its what He said both spoken and written. Exo31:11 Deut4:13 It mattered enough to God that it left an entire generation out of their promised land/rest their inheritance that God told them He would give them on the condition of loving Him with all their heart mind and soul Deut6:3-5 which that included keeping the Sabbath because they didn't keep the Sabbath and that was the reason God said they could not receive their promised land full of milk and honey, God said this plainly Eze20:15-16 and than tells us in the NT not to follow in their same example of disobedience. Heb4:11. Jesus said the greatest commandments to love God with all our heart mind and soul and love neighbor there are no greater commandments than these and they are imbedded in OT what Jesus was quoting and it included the 4th commandment- the one God said Remember, that most of the world has forgotten.
I believing keeping the Sabbath is more than just a day, its a test of loyalty. God said Remember to keep the Sabbath day holy because its tied personally to God- He as being our Creator Exo20:11 our -Re-Creator Eze20:12- the only God we are ever called to worship why its part of the everlasting gospel Rev14:6-7 a sign between God and His people Eze20:20 the only God who has the power to Bless a day Exo20:11 and Bless mankind Isa56:2 and sanctify a day Gen2:3 and sanctify mankind Eze20:12 because we can't do this ourselves Isa66:17 we would literally have to do the opposite of what Jesus said man should live by Mat4:4 to come to the conclusion God doesn't care if we don't keep the only day He said is the holy day of the LORD Isa58:13 there is no other- just sadly a counterfeit Dan7:25
We will all have to decide which voice we listen to. Jesus is LORD of the Sabbath day, meaning someone else is lording Sunday. Sunday came from Pegan roots from sun worship that turned into Sunday worship- what God called the greatest abomination Eze 8:15-17. The Sabbath came from God directly, God only named the Sabbath day, the others were simply day 1, day two etc. and He kept the Sabbath day Luke4:16 made it for mankind Mark2:27 to serve Isa56:6 and join ourselves to the LORD Isa56:6 Isa58:13
The apostles taught we ought to obey God over man. The followed Jesus Acts 17:2 Acts 18:4 Acts 13:42 Acts 13:44.
In the New Heaven and New Earth there will still be an assembly on the Sabbath for worship. God does not change, but I can't help but wonder if we are so opposed to worshipping the LORD and keeping the Sabbath day holy now, would one be happy in heaven? God would never force anyone to worship Him, if that were the case we would be robots and there would have never been sin in the first place. It has to come from a changed heart and love. I wouldn't want to miss this because I ended up following the popular path of what everyone else is doing instead of living by what God said. Mat4:4
Heb 12:22 But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, to an innumerable company of angels, 23 general assembly and church of the firstborn who are registered in heaven, to God the Judge of all, to the spirits of just men made perfect
Isa66:22“For as the new heavens and the new earth
Which I will make shall remain before Me,” says the Lord,
“So shall your descendants and your name remain.
23;And it shall come to pass
That from one New Moon to another,
And from one Sabbath to another,
All flesh shall come to worship before Me,” says the Lord.
I know the arguments for both sides of this topic.
My question would be this: Why is it so important for you?
To me...it's not something to be debated.
Maybe you believe those that do not worship on Saturday are lost because they're
continually disobeying God's commandment.
Maybe those believing on worshipping on the first day of the week believe the other side is following legalism or the Torah or The Law.
The early church worshipped on the Day of the Lord.
The Didache, written approx 90AD and listed the teachings of the Apostles, taught worshipping on the Day of the Lord.
Ignatius of Antioch, who was taught by John and Peter, taught worshipping on the Day of the Lord.
Justin Martyr, whose beliefs came from John through another....taught that worshipping on the Sabbath was living under the Law.
He taught that God does not take pleasure in those that boast about serving God on the Sabbath but that we are to worship on perpetual Sabbaths (every day) and this is the Sabbath that will please the Lord.
I've already explained that I do not adhere to new teachings that I understand to be heretical or non-biblical.
New teachings usually are not biblical...I cannot think of one off-hand that is.
So I will not be engaging in this debate.
I believe we should worship God every day...
WORSHIP God every day.
And do so formally whenever a person deems it to be the Day of the Lord.