John Gills Exposition of the Bible Commentary - Deuteronomy 29:23
And that the whole land thereof is brimstone and salt , and burning ,.... That is, is become exceeding barren, as all such land is where there are sulphureous mines, or salt pits, or burning mountains; not that this would be, or has been the case of the land of Judea in a strict literal sense; only these are expressions made use of to show the barrenness of it, which is its case at this day, not through the nature of its soil being changed, but through the slothfulness of the... read more
Matthew Henry's Complete Commentary - Deuteronomy 29:10-29
It appears by the length of the sentences here, and by the copiousness and pungency of the expressions, that Moses, now that he was drawing near to the close of his discourse, was very warm and zealous, and very desirous to impress what he said upon the minds of this unthinking people. To bind them the faster to God and duty, he here, with great solemnity of expression (to make up the want of the external ceremony that was used (Exod. 24:4-8), concludes a bargain (as it were) between them and... read more