They would appeal to passages such as Romans 14 and Colossians 2:16 in support of the idea that the Sabbath is no longer obligatory.[/quote]

Speaking as one who comes from a dispensational background, I would say that it's much more than these passages. The argument is that the 10 commandments were given to Israel and not to the church. Therefore, the only reason the other 9 commandments would be obligatory is because they are specifically repeated in the New Testament, in some form. Hence, the law, as contained in the 10 commandments, is not the rule of life for the Christian. The commands of the New Testament are.
I don't subscribe to this view. I'm just familiar with it as most of my Christian friends and acquaintances would hold to it.

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Mike Shingler
Pastor: Steep Hollow Baptist Church (SBC)
Bryan, TX