1Ki 4:33 “And he spoke of trees, from the cedar on Lebanon to the hyssop which grows upon the wall.” The cedar and hyssop are placed in antithesis, the former as the largest and most glorious of trees, the latter as the smallest and most insignificant of plants, to embrace the whole of the vegetable kingdom. Thenius maintains that by אזוב we are not to understand the true hyssop, nor the Wohlgemuth or Dosten (ὀρίγανον), according to the ordinary view (see at Exo 12:22), because they are neither of them such small plants as we should expect in an antithesis to the cedar, but “one of the wall-mosses growing in tufts, more especially the orthotrichum saxatile (Oken), which forms a miniature hyssop with its lancet-shaped leaves, and from its extreme minuteness furnishes a perfect antithesis to the cedar.” There is much to favour this view, since we can easily imagine that the Hebrews may have reckoned a moss, which resembled the hyssop in its leaves, as being itself a species of hyssop. - “And of beasts and birds, of creeping things and fishes;” the four principal classes into which the Hebrews divided the animal kingdom. Speaking of plants and animals presupposes observations and researches in natural science, or botanical and zoological studies.