I am bothered, continue to be bothered, by the picking and choosing amongst the laws in the Old Testament. Were they all abolished? Were some abolished and not others?
Some of the laws that appear 'odd' are based on common sense. Sew a new piece of linen together with a new piece of wool and see what happens when they get wet and then dry out.
Most of the dietary laws are based on protecting health. Pork and shellfish can kill if not prepared properly. Fowl that hold down their food with one foot are carrion eaters and often infected with dangerous bacteria.
The law against homosexuality was needed to protect a desert-dwelling tribe with a high infant mortality rate.
Resting one day in seven makes good sense, with or without a religious law to enforce it.
So if Jesus canceled the law, which part of the law did he cancel? How can we know? We hold up the Ten Commandments as still valid, but what of the other six hundred and three laws found in the Old Testament? Are they all invalid? Are some still to be obeyed?
How do we know which is which?
I wonder that myself. I'm guilty of picking and choosing which laws to follow based on whether it is still relevant or not. A lot of laws from the Old Testament were created to abolish Pegan beliefs. So in some ways I feel like some laws (or rules) no longer apply.