For, behold, the LORD will come with fire, and with his chariots like a whirlwind, to render his anger with fury, and his rebuke with flames of fire. For by fire and by his sword will the LORD plead with all flesh: and the slain of the LORD shall be many. They that sanctify themselves, and purify themselves in the gardens behind one tree in the midst, eating swine's flesh, and the abomination, and the mouse, shall be consumed together, saith the LORD. (Isaiah 66:15-17) The Lord says' by the mouth of Isaiah that those that eat swine's flesh (pork) shall be consumed.
Just in case we have forgotten who this Lord is, let us go to II Thessalonians chapter one, and start at the sixth verse and we will see that it is Jesus that Isaiah is referring to and not the Father.
Seeing it is a righteous thing with God to recompense tribulation to them that trouble you; And to you who are troubled rest with us, when the Lord Jesus shall be revealed from heaven with his mighty angels, In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ: Who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of his power; (II Thessalonians 1:6-9)
Note what the eighth verse states, "In flaming fire taking vengeance on them that know not God." Paul was quoting Isaiah the 66th chapter and the 15th verse, where it states, "For, behold, the LORD will come with fire, and with his chariots like a whirlwind, to render his anger with fury, and his rebuke with flames of fire." These individuals that receive the Lord's vengeance know Him not and obey not the Gospel of the Lord Jesus Christ. The dietary law is part of the commandments.