We found in Torah that GOD had given Moses and his people the law of burnt offerings at the Mount Sinai :
Lev.7-
37 This is the torah of the olah (burnt offering), of the minchah (grain offering), and of the chattat (sin offering), and of the asham (trespass offering), and of the ordination offerings, and of the zevach hashelamim (sacrifice of the peace offerings);
38 Which Hashem commanded Moshe on Mt. Sinai, in the day that He commanded the Bnei Yisroel to offer their korbanot unto Hashem, in the Sinai Desert.
But in the latter books , e.g. , in Jermiah it was told that GOD never ordained the laws of burnt offering to Moses and his people . In conjunction HE said instead listening to HIM , the people of Moses disobeyed HIM and followed the rituals the way they wanted :
Jer.7-
21 Thus saith Hashem Tzva’os, Elohei Yisroel; Add your olot unto your zevakhim, and eat basar.
22 For I spoke not unto Avoteichem, nor commanded them in the day that I brought them out of Eretz Mitzrayim, concerning olah or zevach;
23 But this thing I commanded them, saying, Obey My voice, and I will be for you Elohim (your G-d), and ye shall be My people; and walk ye in kol HaDerech that I have commanded you, l’ma’an (in order that) it may go well with you.
24 But they paid heed not, nor inclined their ear, but walked in the inclinations of the stubbornness of their lev harah (evil heart), and went backward, and not forward.
Those passages from Lev.7 and Jer.7 in contradiction .Probably Prophet Jermiah explained why they are in contradiction :
Jer.8-
8 How can ye say, We are chachamim (wise ones), and the torat Hashem is with us, when, hinei, the et sheker (deceiving pen) of the sofrim (scribes) has made it [the torat Hashem] into sheker (a falsehood).
9 The chachamim (wise men) are ashamed, they are dismayed and trapped; they have rejected the Devar Hashem; so what chochmah (wisdom) is in them?
Please share your thoughts . There might be having some explanation to skip this difficulty .