Noah built an altar where he could offer sacrifices to the LORD. Then he offered on the altar one of each kind of animal and bird that could be used for a sacrifice.
That's why you must make a difference between animals and birds that I have said are clean and unclean—this will keep you from becoming disgusting to me.
Don't be fooled by any kind of strange teachings. It is better to receive strength from God's undeserved kindness than to depend on certain foods. After all, these foods don't really help the people who eat them.