Matthew 5:17-18....."Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them. I tell you the truth, 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."
I believe ceremonies are null and void, but not morals. Another example is the woman caught in adultery. The OT said adulterers were to be stoned to death. But Jesus taught differently. He basically forgave her, but told her not to do it again.
I'm not making much sense here, lol.