Matt 22:37-40
37 Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind.
38 This is the first and great commandment.
39 And the second is like unto it, Thou shalt love thy neighbour as thyself.
40 On these two commandments hang all the law and the prophets.
KJV
The OT is a foreshadow of the NT. If you lay them on top of each other they should mirror one another.
We are still bound and accountable to the principles of the OT. THere is just no sacrifice needed as the price was already paid. We can call on Grace and Mercy of God when we fail and no need to spill the blood of goats and such. We are free in Jesus and not bound but we are accountable, if we ar echildren of the most high King to the rules he has established for his house.