just to specifically show that your verses -don't- establish that the sabbath is 'the lord's day'...
regarding mark 2:28...jesus is lord of the sabbath...however that does not mean this is the only day he is lord of...or that it is the only day that is his...and it does not prove that the sabbath is the only day that could possibly be called 'the lord's day'
to use a real world example of what you are claiming and why your claim is illogical... queen elizabeth is officially the monarch of australia...but that does not mean she is monarch -only- of australia...and nobody would insist that saying 'queen elizabeth's country' -must- refer only to australia...
instead you would have to recognize what conventionally would be meant by the phrase 'queen elizabeth's country'...obviously england... likewise you need to determine what the early christians would have understood to be meant by the phrase 'the lord's day'...and this is documented in early christian writings as being sunday...
now regarding exodus 20:10...the seventh day is the lord's sabbath...however this doesn't establish that 'the lord's sabbath' and 'the lord's day' are the same thing...since 'sabbath' is obviously a more specific term than 'day'
to use another queen elizabeth example...suppose we know that 'the queen's favorite ice cream' is vanilla...based on this fact alone you couldn't just assume that the phrase 'the queen's favorite dessert' must also refer to vanilla...obviously her favorite dessert might not even be an ice cream...
so in fact neither of the two verses you posted actually establish that 'the lord's day' must be the sabbath...
regarding mark 2:28...jesus is lord of the sabbath...however that does not mean this is the only day he is lord of...or that it is the only day that is his...and it does not prove that the sabbath is the only day that could possibly be called 'the lord's day'
to use a real world example of what you are claiming and why your claim is illogical... queen elizabeth is officially the monarch of australia...but that does not mean she is monarch -only- of australia...and nobody would insist that saying 'queen elizabeth's country' -must- refer only to australia...
instead you would have to recognize what conventionally would be meant by the phrase 'queen elizabeth's country'...obviously england... likewise you need to determine what the early christians would have understood to be meant by the phrase 'the lord's day'...and this is documented in early christian writings as being sunday...
now regarding exodus 20:10...the seventh day is the lord's sabbath...however this doesn't establish that 'the lord's sabbath' and 'the lord's day' are the same thing...since 'sabbath' is obviously a more specific term than 'day'
to use another queen elizabeth example...suppose we know that 'the queen's favorite ice cream' is vanilla...based on this fact alone you couldn't just assume that the phrase 'the queen's favorite dessert' must also refer to vanilla...obviously her favorite dessert might not even be an ice cream...
so in fact neither of the two verses you posted actually establish that 'the lord's day' must be the sabbath...
by the way I never said Jesus is only Lord of the Sabbath day. but I did show from the bible that he is Lord of the Sabbath day by His own claim. being that the bible interpret's itself It makes sense to find what day the Lord's day is from the bible don't you think?
I am sure Jesus is Lord of every day and everything, however Johns use of the Lords day designates a specific day not a possible one of seven. And Jesus said he was Lord of a specific day namely the Sabbath. I have not seen anywhere that connects The Lords day with Sunday or even the resurrection.
SO it seems I have a lot more going for my view than you do yours. I also find it funny that you argue that every day is the Lord's yet you yourself attach the Lord's day to Sunday a specific Day.
The main difference being that you ask men to tell you which day the Lord's day is and I ask God in His word.
who do you think is on safer ground?