"We have to obey the ten commandments, but our obedience to the Sabbath is fulfilled when we observe Jesus."
WRONG!!!!!!!!!!!!!!! That is a LIE! We observe Jesus by doing what he said -what the Father wills -which is keeping the sabbath commandment.
The bold is obnoxious -I realize that -but this is very important!!!!
The MARK OF THE BEAST has very much to do with the law -rather -with not keeping the law and teaching that it need not be kept!
Notice where God's mark/sign is to be......
Exo 13:9 And it shall be for a sign unto thee upon thine hand, and for a memorial between thine eyes, that the LORD'S law may be in thy mouth: for with a strong hand hath the LORD brought thee out of Egypt
GOD'S LAW IS TO BE IN THE FOREHEAD AND HAND -in what you THINK AND BELIEVE -and IN WHAT YOU DO.
Deu 6:6 And these words, which I command thee this day, shall be in thine heart:
Deu 6:7 And thou shalt teach them diligently unto thy children, and shalt talk of them when thou sittest in thine house, and when thou walkest by the way, and when thou liest down, and when thou risest up.
Deu 6:8 And thou shalt bind them for a sign upon thine hand, and they shall be as frontlets between thine eyes.
Deu 11:18 Therefore shall ye lay up these my words in your heart and in your soul, and bind them for a sign upon your hand, that they may be as frontlets between your eyes.
Deu 11:19 And ye shall teach them your children, speaking of them when thou sittest in thine house, and when thou walkest by the way, when thou liest down, and when thou risest up.
Deu 11:20 And thou shalt write them upon the door posts of thine house, and upon thy gates:
Deu 11:21 That your days may be multiplied, and the days of your children, in the land which the LORD sware unto your fathers to give them, as the days of heaven upon the earth.
Deu 11:22 For if ye shall diligently keep all these commandments which I command you, to do them, to love the LORD your God, to walk in all his ways, and to cleave unto him;
Deu 11:23 Then will the LORD drive out all these nations from before you, and ye shall possess greater nations and mightier than yourselves
The LAW -and NOT KEEPING IT -has much to do with what will happen to people during this "great tribulation"
Where is the mark of the beast? In the same place as the sign of God is to be!
Rev 13:16 And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads:
Rev 13:17 And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name.
The mark of the beast displaces the mark/sign of God -it signifies obedience to one other than God.
It is not an actual physical mark -it is what one thinks/believes and what one does.
One either obeys the law of God -or does not.
How can this lead to not being able to buy or sell -to being killed?
Ask any throughout history who have been persecuted for keeping the sabbath -for being "Judaizers"!