The law in the Torah is composed of three parts - ceremonial, civil, and moral.
The civil laws are those that applied to Israel only in that time and place under that theocracy, but they vary from culture to culture and place to place. For example, Jews could not stone a man to death for adultery because Roman law forbade them to do so, even though under Israel's theocracy it was the law of the land.
The ceremonial laws are those that Jesus fulfilled, such as the laws of sacrifice. As Christians, we do not keep them anymore.
The moral laws are those which we naturally know - and which can never be fulfilled. They are eternal, in place until Christ comes again to create the new heaven and new earth. It is under this category that the 10 Commandments fall.
The New Testament itself makes a distinction between ceremonial and moral law, in 1 Cor. 7:19, where Paul makes a distinction between circumcision - clearly done away with in the new covenant - and "the keeping of the commandments of God," which we are urged to do. Clearly there is a distinction between ceremonial and moral law here.
Technorati tagged: Bible, Bible study, God, Jesus, Christ, Christian, Christianity, Sunday, Sabbath, religion, faith