Could you explain Isaiah 66:17. Is this saying that when Jesus returns all those eating pigs and rats and other abominable things will be condemned?
The context of Isaiah 66 is the contrast between judgment and hope. It speaks of both the Great Tribulation and the restoration of Jerusalem. It says when the Lord comes He will express His esteem for those who are humble and of contrite spirit and who tremble at His word. They will rejoice greatly and He will extend both peace and prosperity to them.
But for the rest, He will come in judgment. Both those who keep themselves ceremonially pure and those who eat unclean foods will perish together. This is because it isn’t keeping the Law that saves a person, it’s believing in Him.