Nothing of the Old Testament law has been done away with. It is still applicable today for the Christian Church. Who shouldn't be eating pork, or breaking the sabbath.
Matthew 5:18
For truly I tell you, until heaven and earth disappear, not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished.
Matthew 5:18
For truly I tell you, until heaven and earth disappear, not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished.