Most people miss what its really about, the mark of the beast is over worship- are we worshipping our Creator, or the government who changed God's times and laws. False worship according to Jesus in His own words is laying aside the commandment of God for traditions of men. He said it makes our worship to Him in vain (false)
Mark7: 7 And
in vain they worship Me, Teaching as doctrines the commandments of men.’ 8 For laying aside the commandment of God, you hold the tradition of men
It comes down to which authority one is going to listen to. Whoever we obey is who we serve (worship)
Rom6:16KJV
Rev 14:6 Then I saw another angel flying in the midst of heaven, having the everlasting gospel to preach to those who dwell on the earth—to every nation, tribe, tongue, and people—7 saying with a loud voice, “Fear God and give glory to Him, for the hour of His judgment has come;
and worship Him who made heaven and earth, the sea and springs of water.” quoting Exo20:11
8 And another angel followed, saying, “Babylon is fallen, is fallen, that great city, because she has made all nations drink of the wine of the wrath of her fornication.”
9 Then a third angel followed them, saying with a loud voice, “If anyone
worships the beast and his image, and receives his mark on his forehead or on his hand, 10 he himself shall also drink of the wine of the wrath of God, which is poured out full strength into the cup of His indignation. He shall be tormented with fire and brimstone in the presence of the holy angels and in the presence of the Lamb. 11 And the smoke of their torment ascends forever and ever; and they have no rest day or night, who
worship the beast and his image, and whoever receives the mark of his name.”
The only safeguard to worship the beast system is found in the next verse which matches exactly what Jesus said- in vain they worship Me, keeping the commandments of men over the commandments of God. Those who worship our Creator
Rev14:7 obey the commandments of God including the Sabbath and serve Him
Isa56:6 not the beast who changed God's times and laws that most people follow which is a tradition over obeying the commandments of God.
Rev 14:12 Here is the patience of the saints; here are those
who keep the commandments of God and the faith
of Jesus.
The mark of the beast has not happened yet because we are free to worship God on the Sabbath like the commandment of God or Sunday like the tradition of man. But when the law goes in effect where Sunday worship is required and Sabbath worship is against the law that's when the mark of ten beast will take in effect. I know this seems far-fetched but they are already working on Sunday laws to pass and you don't pass laws without consequences otherwise there is no teeth to them.
So its not just "Sunday worship" that is the issue, is choosing to obey another voice other than God. Whoever we obey is who we serve or worship.
Rom6:16KJV
Or we can obey God
Eze20: 20 hallow My Sabbaths, and they will be a sign between Me and you, that you may know that I am the LORD your God.’