# when they see that the whole land has become sulfur and burning salt

"when they see that Yahweh has burned the land with sulfur and salt"

# where nothing is sown or bears fruit

"where no one can sow seed and the crops do not bear fruit" 

# like the overthrow of Sodom and Gomorrah

"as when Yahweh completely destroyed Sodom and Gomorrah"

# Admah and Zeboyim

These are names of cities that Yahweh destroyed along with Sodom and Gomorrah.