Levitical law passed at the cross. Obedience still brings blessings and disobedience brings discipline. But unless you are still offering sacrifice, no need to follow Levitical law.
I have no idea what you are saying when you "no need to follow Levitical law". The dietary law was not the law of the Levites. YHWH law =
Lev 11:1
And the LORD/Yehovah spoke to Moses and to Aaron, saying to them,
Lev 11:2 Speak to the sons of Israel, saying, These are the animals which you shall eat among all the animals that are in the earth.
The Ten Commandments and the 4th commandment (unless you are Catholic) = Deu_5:15 And remember that thou wast a servant in the land of Egypt, and that the LORD thy God brought thee out thence through a mighty hand and by a stretched out arm: therefore the
LORD thy God commanded thee to keep the sabbath day.
All of Israel were commanded to keep the LORD's commandments. Not just Levites.
Exo 20:1
And God spake all these words, saying,
Exo 20:2
I am the LORD thy God, which have brought thee out of the land of Egypt, out of the house of bondage.
Exo 20:3 Thou shalt have no other gods before me.
Exo 20:4 Thou shalt not make unto thee any graven image, or any likeness of any thing that is in heaven above, or that is in the earth beneath, or that is in the water under the earth:
Exo 20:5 Thou shalt not bow down thyself to them, nor serve them: for I the LORD thy God am a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth generation of them that hate me;
Exo 20:6 And shewing mercy unto thousands of them that love me, and keep my commandments.
Exo 20:7 Thou shalt not take the name of the LORD thy God in vain; for the LORD will not hold him guiltless that taketh his name in vain.
Exo 20:8 Remember the sabbath day, to keep it holy.
Exo 20:9 Six days shalt thou labour, and do all thy work:
Exo 20:10 But the seventh day is the sabbath of the LORD thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates:
Exo 20:11 For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it.
Exo 20:12 Honour thy father and thy mother: that thy days may be long upon the land which the LORD thy God giveth thee.
Exo 20:13 Thou shalt not kill.
Exo 20:14 Thou shalt not commit adultery.
Exo 20:15 Thou shalt not steal.
Exo 20:16 Thou shalt not bear false witness against thy neighbour.
Exo 20:17 Thou shalt not covet thy neighbour's house, thou shalt not covet thy neighbour's wife, nor his manservant, nor his maidservant, nor his ox, nor his ass, nor any thing that is thy neighbour's.
Lev 25:1
And the LORD spake unto Moses in mount Sinai, saying,
Lev 25:2
Speak unto the children of Israel, and say unto them, When ye come into the land which I give you, then shall
the land keep a sabbath unto the LORD.
Lev 25:3 Six years thou shalt sow thy field, and six years thou shalt prune thy vineyard, and gather in the fruit thereof;
Lev 25:4 But in the seventh year shall be a sabbath of rest unto the land, a sabbath for the LORD: thou shalt neither sow thy field, nor prune thy vineyard.
Again this was not a Levitical law.
The Levite priesthood had duties, and in those duties some had to work on the Sabbath.
When the 2nd Temple was destroyed in 70 AD, that ended the Temple services and they were scattered at that time.
Christ died in 31 AD, so how come the Temple and the Levitical priest continued for nearly 40 years????