Sure, guys. It's in Gill's commentary on Job chapter 41, which is a bit of a laugh to us with our knowledge, but interesting as an insight to people of his time. But as to the dragon, it's in verse 34, which I'll type

particularly the dragon Atilius Regulus, the Roman general, killed near Bagrade in Africa, is a proof itself of almost all the above articles as Osorious has described it; nor is it any objection that the leviathan is represented as being in the sea, since the dragon, even the land dragon, will plunge into rivers, and is often found in lakes called seas and in maritime places, and will go into the sea itself, as Pliny and Philostratus relate. To which may be added, the this creature was found among the Troglodytes, who lived near the Red sea, and not far from Arabia, where Job dwelt, and so might be well known by him.....

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Tim Vaughan, 48 years old, member Redeemer OPC, Santa Maria CA.