At Mount Sinai, Paul tells us in Galatians, concerning the law, "It was ADDED because
of TRANSGRESSIONS [i.e., breaking of the laws of God], till the seed should come to whom
the promise was made [Christ]" (Gal.3:19). This Law which was "added" was NOT the "Old
Covenant"! Let's not be confused. The Covenant and the Law are two different things! The
Covenant was an AGREEMENT between Israel and God. The Laws were part of that
agreement; they were, in effect, the TERMS of that Covenant. All of those spiritual, moral,
ethical, and civil LAWS did not begin with Moses at Mount Sinai, but went back to
CREATION! The Sabbath law, for example, goes back to Creation (Gen.2:1-3). God reminded
Israel of which day was the Sabbath weeks before Israel ever got to Mount Sinai (Exodus 16).
God gave them the Passover commandments (Exodus 12:14-16) fifty days before the Sinai
covenant!
What, then, was really "new" -- or "added" -- to the system of Laws which God had
already put in force, prior to Mount Sinai? Why, the answer should be obvious. At Mount Sinai
the physical tabernacle, Levitical priesthood, prescribed sacrifices and rituals, were added --
what we generally call the RITUALISTIC LAW, or the law related to the Levitical Priesthood!
These were
the "meats [meal offerings[ and drinks [drink offerings], and divers washings, and carnal
ordinances [marginal reference, "rites, or ceremonies"], imposed on them until the time of
reformation" (Heb.9:10). The Greek word for "ordinances" here is dikaioma which means "what
has been established and ordained by law, an ordinance," "a judicial sentence," "a righteous act
or deed," and in this verse clearly refers to those things related to the Levitical priesthood.
This was a whole body of legislation which was ADDED at Mount Sinai! These rituals
pointed to Christ, and to heavenly objects, of which they were a type or shadow. These things
are not obligatory for Christians today!
http://www.livingcog.com/lawvslaw5.htm
So Jesus didn't do away any law. He chanced the convenant and pointed out the tradition never came from God, an in many cases opposed God's law and/or intentions.