John Trapp on Job 37:18

Verſe 18. Haſt thou with him ſpread out the Skie?] He had convinced Job of his ignorance, and now he will of his impotence and imbecility: and this by an irony; q.d. Tunè ille giga[illegible: 1 letter]es? Art thou indeed that Gyant or Demi-god that helped the Almighty when he ſpred the heavens, when he laid the foundation of the earth, &c? Age itaque ſi tantus vir es, quantum te oſtentas, &c. Go to then, if thou be indeed ſuch an one as thou wouldſt ſeem to be, whiles thou takeſt upon thee to be, viz. to contend with God, and to complain of his hard dealing with thee, Teach us what we ſhall ſay unto him, &c. as ver. 19. for we dare not, as thou haſt done, dare him to come into the liſts with us, as hoping to have the better of him.

Which is ſtrong.] Not by reaſon of any hard maſſie Elemental thickneſs, but by reaſon of their airy,Diod. incorruptible, indiſſoluble nature, compoſed of very thin and even parts. Hence the Greeks call it, [non-Latin text not transcribed], and the Latines Firmamentum. See the Note on Gen. 1.7.

And as a molten Looking-glaſs] Perſpicuum & ſapphirinum, clear and tranſparent as a mirrour wherein God maketh himſelf viſible,R. Levi. as it were; who, of himſelfe is too ſubtle for ſight or ſinew to ſeize upon. The Hebrew hath it, which is ſtrong as a molten Looking-glaſſe; i.e. as a poliſhed brazen Looking-glaſs, being more ſolid then braſs more tranſparent then chriſtal.