Contradiction with Deuteronomy 8:3
Emphasizes that man does not live by bread alone, contradicting the act of eating fish and honeycomb for sustenance.
Deuteronomy 8:3: And he humbled thee, and suffered thee to hunger, and fed thee with manna, which thou knewest not, neither did thy fathers know; that he might make thee know that man doth not live by bread only, but by every [word] that proceedeth out of the mouth of the LORD doth man live.
Contradiction with Romans 14:21
Advises against eating anything that may cause others to stumble, contrasting with eating in front of the disciples.
Romans 14:21: [It is] good neither to eat flesh, nor to drink wine, nor [any thing] whereby thy brother stumbleth, or is offended, or is made weak.