while the angels who abandoned their own domain, instead of preserving their proper rank, are reserved by him within the nether gloom, in chains eternal, for the doom of the great Day ??7 just as Sodom and Gomorra and the adjacent cities, which similarly glutted themselves with vice and sensual perversity, are exhibited as a warning of the everlasting fire they are sentenced to suffer.

just as Sodom and Gomorrah and the adjacent cities, since they in the same way as these angels indulged in gross immoral freedom and unnatural vice and sensual perversity. They are exhibited [in plain sight] as an example in undergoing the punishment of everlasting fire.