All of us who claim to be Christians are expected to be the ones who can hear the voice of Jesus and follow Him. However, the majority of Christians do not. We know that they do not because Jesus prophesies that only a few will be saved and the fact that Christians break with Judaism in the Law of Moses and the Prophets (Luke 16:19-31).
Luke 16:29-31 ASV
(29) But Abraham saith, They have Moses and the prophets; let them hear them. (30) And he said, Nay, father Abraham: but if one go to them from the dead, they will repent. (31) And he said unto him, If they hear not Moses and the prophets, neither will they be persuaded, if one rise from the dead.
Anyone who claims any exemption in the Law and the Prophets, aka the Jewish Bible or the Old Testament for the Christians, is not a follower of Jesus who unambiguously says that not even one character in the letters of the Torah may change until the New World to come is established.
Those Christians who do not or cannot hear the voice of Jesus advance many fallacies and sophisms to listen rather to the other voice and reject the counsel of Jesus (God). Going against Jesus (God) in any iota constitutes allegiance to Satan. Rejecting any doctrine in the Jewish Bible amounts to rejecting Jesus (God) because He is the Voice in the garden of Eden and on Sinai who spoke. Eve and Adam chose not listen to Jesus (God) but to Satan. The Israelites chose not to listen to Jesus (God) through Moses either but most of them went to Satan. Jesus (God) never minces words to butter up His Gospel to lure believers.
We do not have records that the Israelites used sophisms to reject Jesus (God) in Moses. They simply did not do as Moses asked them to. But, we, who listen to the wrong voice, use any kind of dumb arguments to win the one act of disobedience which suffices to qualify us for the second death (James 2:10, Revelation 21:8).
May we use or agree with any counter argument against what is written in Moses and the Prophets using Jesus or any association with Him as the reason? No, because Jesus declares in Matthew 5:17-18 that He does not affect or loose the Law or the Prophets in any way and that it is easier for our world to disappear than any thing in the Law and the Prophets (Old Testament) to change.
Matthew 5:17-18 ASV
(17) Think not that I came to destroy the law or the prophets: I came not to destroy, but to fulfil.
(18) For verily I say unto you, Till heaven and earth pass away, one jot or one tittle shall in no wise pass away from the law, till all things be accomplished.
Based on the immutability of the Law or the Prophets according to Jesus in Matthew 5:17-18, may we eat any unclean thing because of Jesus? No, because Jesus says that He did not come to loose the Law or the Prophets.
Based on the immutability of the Law or the Prophets according to Jesus in Matthew 5:17-18, can the Sabbath ever become obsolete.
Based on the immutability of the Law or the Prophets according to Jesus in Matthew 5:17-18, may we entertain any reversal in Moses because our times demand it?
Based on the immutability of the Law or the Prophets according to Jesus in Matthew 5:17-18, may we 'do' when the Law or the Prophets says 'do not'? May we 'do not' when the Law or the Prophets says 'do'? The answer is never.
Based on the immutability of the Law or the Prophets according to Jesus in Matthew 5:17-18, may we observe, from the Law of Moses, the day of atonement and its sabbath or any other feast, festival and their sabbath (s) ? No, because Jesus fulfilled that sacrificial portion of the Law of Moses.
From the above, if we reject the Sabbath under any pretense, observe the atonement, eat unclean food, we are acting against the will of God (Jesus) and become guilty of all the Law according to James 2:10.