They will prohibit marriage and require abstinence from certain foods that God has created to be received with thanksgiving by those who believe and know the truth.
KJV
Forbidding to marry, [and commanding] to abstain from meats, which God hath created to be received with thanksgiving of them which believe and know the truth.
ASV
forbidding to marry, and commanding to abstain from meats, which God created to be received with thanksgiving by them that believe and know the truth.