From many Scriptures it is apparent that the angels, or spirit beings, have the power of materializing as human beings. This materialization is complete, as the following Scriptural citations indicate, showing that these materialized beings could eat and drink and perform all of the functions of the natural being of the earthly plane of existence. (`Gen. 18:8`; `Gen. 32:24`; `Zec. 1:9,5`; `Luke 1:30`; `Acts 12:7-10`.) It is evident that the angels in their proper habitation, the spiritual realm, do not possess the powers of reproduction. It would, therefore, be impossible for them to have angelic progeny. It is only as they materialize as human beings that they could exercise the powers belonging to the race of mankind, and thus bring children into the world of the fleshly nature. Because some of the angels did this without the Divine sanction, they were punished by being restrained in chains of darkness unto the Judgment day.