Here are some verses from the Old and New Testament regarding foods that they could and could not eat. Then Jesus died on the Cross to free us.
Leviticus 11:9 – “These shall ye eat of all that are in the waters: whatsoever hath fins and scales in the waters, in the seas, and in the rivers, them shall ye eat.”
Leviticus 11:10 – “And all that have not fins and scales in the seas, and in the rivers, of all that move in the waters, and of any living thing which is in the waters, they shall be an abomination unto you.”
Deuteronomy 14:10 – “And whatsoever hath not fins and scales ye may not eat; it is unclean unto you.”
Deuteronomy 14:11 – “Of all clean birds ye shall eat.”
Matthew 15:11 – “Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth a man.”
Matthew 15:17 – “Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught?”
Acts 10:13 – “And there came a voice to him, Rise, Peter; kill, and eat.”
Acts 10:14 – “But Peter said, Not so, Lord; for I have never eaten any thing that is common or unclean.”
Acts 10:15 – “And the voice spake unto him again the second time, What God hath cleansed, that call not thou common.”
Acts 10:28 – “And he said unto them, Ye know how that it is an unlawful thing for a man that is a Jew to keep company, or come unto one of another nation; but God hath shewed me that I should not call any man common or unclean.”
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.”
Romans 14:20 – “For meat destroy not the work of God. All things indeed are pure; but it is evil for that man who eateth with offence.”
1 Corinthians 6:12 – “All things are lawful unto me, but all things are not expedient: all things are lawful for me, but I will not be brought under the power of any.”
1 Corinthians 8:8 – “But meat commendeth us not to God: for neither, if we eat, are we the better; neither, if we eat not, are we the worse.”
1 Corinthians 10:25 – “Whatsoever is sold in the shambles, that eat, asking no question for conscience sake.”
1 Timothy 4:4 – “For every creature of God is good, and nothing to be refused, if it be received with thanksgiving.”
1 Timothy 4:5 – “For it is sanctified by the word of God and prayer.”
Colossians 2:16 – “Let no man therefore judge you in meat, or in drink, or in respect of an holy day, or of the new moon, or of the sabbath days.”
Colossians 2:20 – “Wherefore if ye be dead with Christ from the rudiments of the world, why, as though living in the world, are ye subject to ordinances,”
Colossians 2:21 – “Touch not; taste not; handle not;”
Thoughts
As it says in Matthew 15:11, “It is not what goes into the mouth that defiles a person, but what comes out of his mouth.” The restrictions in the Old Testament were not for today and when Jesus died on the Cross, He fulfilled the Old Testament law. We can eat whatever we want, the only case to not eat something as it says in Romans is if it would offend someone. Then we should refrain from eating whatever that is.