Idol sacrifice aside, which is pretty self-explanatory, there remained blood and strangled animal meat.
That's still part of the "pagan stuff" that they were wanting them to avoid.
So they lightened it up a lot, but didn’t cancel entirely.
What you eat is up to your conscience. God doesn't care.
To not eat some products for the sake of being different seems silly. What does food have to do with God worship? There’s plenty of difference right there in theology and temple rituals, why extend it. Seems unnecessary.
Israel wasn't a religion, but a people. The notion of religious identity being distinct from one's ethnic-social-national identity is a pretty modern idea. To be an Israelite meant to be an Israelite--a member of God's covenant people; a distinct nation of people from other nations of people.
If you're wondering why these very specific restrictions, well I haven't a clue.
Why is it called clean and unclean if it’s merely for distinction? There were other unclean actions or things, such as a woman during her period or touching a corpse.
Ritual purity. The external is connected with the internal, the unclean or impure renders what it contacts as also unclean or impure.
When Jesus said that it is what comes out of someone rather than what goes inside of them that makes a person unclean, Jesus was intentionally inverting the way people saw the concept of "purity". For Christians the former things served as symbols and signs pointing to bigger things. Purity, for example, isn't about the outward body, it's about a purity of heart and mind. The impure is the "dirt" as it were of ideas, beliefs--of the powers and principalities of the world--that taint us by leading us astray from the truth of God. Our idolatries that poison us by leading us away from the true God who shows Himself in Jesus Christ, and all of our myriad false views of the divine. I'm using "idolatry" very broadly. I'm not just talking about literal worship of idols, arguably more importantly I'm talking about our wrong views of God. Even further: When we sexually objectify another human being, or when we lie, or cheat, or cause injury, we are engaging in an idolatry of denying the full integrity, the divine likeness, of the human person. That's our idolatry.
Christianity reads the Old Testament through the New. Because the purpose of the Bible in the Christian religion is Jesus. The Bible isn't
the Word of God, Jesus Christ is. It is for Christ's sake that we regard the Scriptures as the sacred and inspired word of God.
-CryptoLutheran