Contradiction with Numbers 19:2
Deuteronomy 21:3 uses a heifer that has not been worked, while in Numbers 19:2, the description of the "Red Heifer" does not emphasize its status as having not been worked but rather its color and lack of blemish.
Numbers 19:2: This [is] the ordinance of the law which the LORD hath commanded, saying, Speak unto the children of Israel, that they bring thee a red heifer without spot, wherein [is] no blemish, [and] upon which never came yoke:
Contradiction with Leviticus 22:22
Deuteronomy 21:3 requires a heifer without blemish, while Leviticus 22:22 highlights that offerings must be without blemish, raising contradictions in what beasts can fulfill diverse laws.
Leviticus 22:22: Blind, or broken, or maimed, or having a wen, or scurvy, or scabbed, ye shall not offer these unto the LORD, nor make an offering by fire of them upon the altar unto the LORD.
Contradiction with Hebrews 10:4
Deuteronomy 21:3 involves the use of a heifer for a ceremonial ritual, whereas Hebrews 10:4 discusses the insufficiency of animal sacrifices to take away sins, which could contradict the perceived purpose of atonement in the ritual.
Hebrews 10:4: For [it is] not possible that the blood of bulls and of goats should take away sins.
Contradiction with Isaiah 1:11
Focuses on God's disfavor toward burnt offerings, which might contrast with the sacrificial system implied by Deuteronomy 21:3.
Isaiah 1:11: To what purpose [is] the multitude of your sacrifices unto me? saith the LORD: I am full of the burnt offerings of rams, and the fat of fed beasts; and I delight not in the blood of bullocks, or of lambs, or of he goats. [he goats: Heb. great he goats]
Contradiction with Psalm 51:16
Contradicts the necessity of animal sacrifices, implying they are not what God desires, which conflicts with the ritualistic law shown in Deuteronomy 21:3.
Psalm 51:16: For thou desirest not sacrifice; else would I give [it]: thou delightest not in burnt offering. [else...: or, that I should]