jesus said "should tithe"?

christians believe in the new-testament group of books, and do not practice the law-of-moses so what about when jesus said "you should seperate the tithe on spices"? why did he not teach the new testament of jeremiah which describes itself as "inside" fulfills so do not say need more, not practices of the hands?
there are several possibilities.
my opinion first- the covenant of jeremia called the "new covenant" which is described in jeremia as inside meaning it is fulfilled by inside knowing... begins as a "covenant" which we know from exodus that covenants begin with blood so before the crucifixion is before blood and before covenant began. the only section to examine is AFTER  the blood if jesus said "practice the law" after the blood then we can know it is not the covenant described in jeremia and since after the blood he said teach... that is ideas and not ceremony so it matches jeremia. and fulfills the prophecy from jehova.
in fact we must not forget the jesus did teach even before the blood "not old wine skins" in mathew 9.17, which matches jermia and paul so it is supported,  indicating he taught the law would end because he said so... but tithe idea is in 23.23 that was before the blood on cross.
others say considering jesus also said "not old wine skins" in mat. 9, this section is "not literal but a strategem" to convince the listeners.
another clue is the context of mathew 23.2 seat of moses... the pharisees used physical punishments to compel the people and bully them to practice the law so you "must" because they bully and threaten and compel you... like the beatings decribed in deuteronomy "forty not more" was that merciful? relative to the era yes.   jesus specified moses to indicate "only because moses" not because you are truly required but because the romans permit the rabbis to hit you.
others say, altho mathew was written after the blood [soon after the blood as indicated by the end of the book the same proof used to define the book acts 52 ad so Mathew 35 ad] he wanted those who rejected jesus "you" who are not inside grace are still inside law so "do not be hypocrites" instead "you" obey law emphasizing the important while you tithe, "you" but not myself nor students who are inside grace of belief as god spoke thru jeremia because the time matthew wrote after the blood those who believe were like paul who said "i am free from the law" about himself... I the one born inside jews who teach to obey laws and ceremonies of moses even I myself was freed by grace in romans 8 and similarly "even the words carved in stone passed away" meaning the sabath and ten commandments carved in stone passed away so certainly the rest of the law of moses not in stone passed away and free from the law.
if jews would respect jeremia and that can be expected becasue they say oyt os a good bokk... then they should know that "inside" fulfills and no need t practice actions and ceremonies because veen before jesus jeremia said that god wants "inside" and that fiulfills so inside without ceremoiny not only fulfills but is the descriprtion of the new covenant of jeremia it may have begun as sson as jeremia said it oir as soon as god showed he sdid not save the temple of practices. that is the indication to stop ceremonies but the jews continued the ceremonies until jesus.
in fact jesus sent a guy to sacrifce... why? because it was before th eblood or as a strategy you are freefrom all law but go offer the sacrifice to get their attention and telll them about the christ msessia as a strategy and after truly entering the new covenant the old passe away choosing one or two is not a problem to reject most because it all passed away.
anothe roption challenges christian doctrine ywte t is possible.
we know from gospel of john that the day "for offering the passover" jesus was brought before pilate  indicating he was killed that day... so we know after the decision john is good that matthew is not totaly reliable source because mathew claims he was brought to pilate a day later... after the day of the passover not the same day since matthew is not reliable we cannot trust that jesus realy said "should tithe spices and not neglect the law" only the messages which match the idea of jeremia and paul can be trusted as consistent with gods revealed will so beleibe" not old wineskins" as confirnming jeremia bit the practice law cannot be trusted because in general matthew is not reliable.
admittedly the same flaw can be said regardin g joghn since jesus [prepared the passover on the day of preparation and the following day was before pilate then john is not reliable either so whether the gospeklls conflict john or matthew they are not reliable and for that reason all four should be removed from the group of "new testament" books at least the majoritu of content before the blood should be removed and only the four version of the blood story beginning after he left pilate and without the contradictory of when are worth preservinhg and most importantly the teachings AFTER hgthe blood but teachings befoe the bolld were from the era befre and need not be preserved.
sinmilarly acts is a problem because altho it tells the storuy christian think "we must practuce what the original christians did; and performed asdescribed in acts when intruth "simon never said so you are out" jesus only said what he said between the blood and the ascension but the rest of acts is not jesus teaching for examp;lte keeping foru in acts fpr gentiles when jesus said "not in old wineskins" which may mean when he taught or as above from the era of blood either way gentiles do not need even four... even jewish followers of jesus should not use "old wineskins" anymore from the era of blood so acts is not good because it budens four when the law awas only for the family called israelites and not for tothers general and even the law odf iosraelites ashad a limit in jeremia which beganm at the lates t when jesus died. sio even jews should respect the messag jeremia brought that a new era came where inside fulfills and teaching also practice is a rebellion against jehova.