'Whereof' in the Bible

For unto the angels hath he not put in subjection the world to come, whereof we speak.

Whereof the Holy Ghost also is a witness to us: for after that he had said before,

But if ye be without chastisement, whereof all are partakers, then are ye bastards, and not sons.

We have an altar, whereof they have no right to eat which serve the tabernacle.