Contradiction with Leviticus 11:13-19
These verses list specific birds that are unclean and should not be eaten, distinguishing between clean and unclean birds, in contrast to the allowance in Deuteronomy 14:20 for eating clean birds.
Leviticus 11:13-19: And these [are they which] ye shall have in abomination among the fowls; they shall not be eaten, they [are] an abomination: the eagle, and the ossifrage, and the ospray,
Contradiction with Deuteronomy 14:11-18
These verses specify certain birds that are not to be eaten, providing a list of forbidden birds, which delineates against the notion of simply eating "clean" fowls without specifying the types.
Deuteronomy 14:11-18: [Of] all clean birds ye shall eat.
Contradiction with Acts 10:14-15
Peter initially refuses to eat certain animals as unclean, but a voice from heaven tells him what God has cleansed, do not call common. This suggests a change from Old Testament dietary laws like those in Deuteronomy 14:20.
Acts 10:14-15: But Peter said, Not so, Lord; for I have never eaten any thing that is common or unclean.
Contradiction with Mark 7:18-19
Jesus declares all foods clean, which implies a departure from Old Testament dietary restrictions seen in Deuteronomy 14:20, which distinguishes between clean and unclean birds.
Mark 7:18-19: Because it entereth not into his heart, but into the belly, and goeth out into the draught, purging all meats?
Contradiction with Romans 14:14
This verse expresses that no food is unclean in itself, which contradicts the idea in Deuteronomy 14:20 that there is a specific distinction between clean and unclean fowls to be eaten.
Romans 14:14: I know, and am persuaded by the Lord Jesus, that [there is] nothing unclean of itself: but to him that esteemeth any thing to be unclean, to him [it is] unclean. [unclean: Gr. common]