Contradiction with Exodus 19:5
Numbers 18:28 refers to offerings specifically for the Levites, while Exodus 19:5 speaks of the entire nation being a "kingdom of priests," implying a collective ownership rather than tribal allocations.
Exodus 19:5: Now therefore, if ye will obey my voice indeed, and keep my covenant, then ye shall be a peculiar treasure unto me above all people: for all the earth [is] mine:
Contradiction with Deuteronomy 18:1-2
Numbers 18:28 outlines a duty for the Levites, but Deuteronomy 18:1-2 states the Levites have no portion or inheritance, emphasizing different roles.
Deuteronomy 18:1-2: The priests the Levites, [and] all the tribe of Levi, shall have no part nor inheritance with Israel: they shall eat the offerings of the LORD made by fire, and his inheritance.
Contradiction with Matthew 6:1
Numbers 18:28 discusses specific offerings and duties, whereas Matthew 6:1 advises doing good deeds quietly and without seeking reward, presenting a different approach to religious acts.
Matthew 6:1: Take heed that ye do not your alms before men, to be seen of them: otherwise ye have no reward of your Father which is in heaven. [alms: or, righteousness] [of your: or, with your]
Contradiction with Hebrews 10:11
Numbers 18:28 involves ongoing offerings by the Levites, while Hebrews 10:11 tells of the insufficiency of daily sacrifices and the arrival of a perfect sacrifice, suggesting a change in priestly activities.
Hebrews 10:11: And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins:
Contradiction with 1 Samuel 15:22
Numbers 18:28 involves mandated offerings and rituals, but 1 Samuel 15:22 emphasizes obedience over sacrifice, which puts ritual actions and spiritual obedience in contrast.
1 Samuel 15:22: And Samuel said, Hath the LORD [as great] delight in burnt offerings and sacrifices, as in obeying the voice of the LORD? Behold, to obey [is] better than sacrifice, [and] to hearken than the fat of rams.
Paradox #1
The contradiction or inconsistency could be that some might see a conflict between the practice of giving a portion of offerings to the Levites, who perform religious duties, and the idea of all offerings being dedicated to God for spiritual purposes. This could be viewed as a tension between religious support systems and pure worship intentions.