To created angels appearing visibly in this manner, it is clear that the same laws of optics and acoustics are available as to men, only in a far higher degree. That they saw objects which are naturally visible to men as clearly as men see them, and heard sounds and voices audible to them as distinctly as they, is evident from every narrative in which such things are mentioned or implied. But their power of visual and auricular perception is not restricted as in the human race. From the nature of the organism in which the spirit of man resides, his natural power in these relations is very limited. In the instance of vision, however, his natural power may, in conformity with the ordinary laws of vision, be, by the appliances of art, immeasurably increased. Telescopes and microscopes are but additions to the natural organ. In angels that organ may naturally as far transcend the optical power of human skill and science, as the latter exceeds the unaided power of vision in man. Moreover, to spirits inhabiting angelic organisms, things which circumscribe human vision probably constitute no obstructions. Material bodies which to the human eye are opaque, may to them be as transparent as crystal or the atmosphere to man. The degree of light necessary to their vision of objects may be as nothing compared with that required by the human eye; and distance, so wonderfully obviated by the effect of optical instruments, may be, and undoubtedly is, proportionally, as nothing to them. Now, since those beings have a distinct, personal, visible form--visible to the unaided human eye on the occasion of their appearance in the earlier and at the opening of the present dispensation, as at the annunciation and the resurrection--and since their visual perceptions correspond to our law of optics, it is to be inferred that they see each other and all external objects in the same way as they saw men; and doubtless the like, both with respect to the mode and the degree or extent of perception, may be safely inferred in relation to their hearing and feeling. Whatever else may be true of the organisms in which they dwell, enough is revealed to justify the conclusion, that, being in their attributes as spirits like the spirits of men, they exercise their faculties through the instrumentality of those organisms in the same way as men through theirs. Thus it is certain that by means of those visible forms they exercise physical power. The two angels who came in the form of men to Lot in Sodom, "_put forth their hands and pulled Lot into the house to them_, and shut to the door. And _the men_ said unto Lot, Hast thou here any besides?... And while he lingered, the _men_ laid hold upon his hand, ... and they brought him forth and set him without the city." Gen. xix.