Deuteronomy 8

8. A land of wheat, and barley--These cereal fruits were specially promised to the Israelites in the event of their faithful allegiance to the covenant of God ( Psalms 81:16 , 147:14 ). The wheat and barley were so abundant as to yield sixty and often an hundredfold ( Genesis 26:12 , Matthew 13:8 ).
vines, and fig trees, and pomegranates--The limestone rocks and abrupt valleys were entirely covered, as traces of them still show, with plantations of figs, vines, and olive trees. Though in a southern latitude, its mountainous formations tempered the excessive heat, and hence, figs, pomegranates, &c. were produced in Palestine equally with wheat and barley, the produce of northern regions.
honey--The word "honey" is used often in a loose, indeterminate sense, very frequently to signify a syrup of dates or of grapes, which under the name of dibs is much used by all classes, wherever vineyards are found, as a condiment to their food. It resembles thin molasses, but is more pleasant to the taste [ROBINSON]. This is esteemed a great delicacy in the East, and it was produced abundantly in Palestine.

9. a land whose stones are iron--The abundance of this metal in Palestine, especially among the mountains of Lebanon, those of Kesraoun, and elsewhere, is attested not only by JOSEPHUS, but by Volney, Buckingham, and other travellers.
brass--not the alloy brass, but the ore of copper. Although the mines may now be exhausted or neglected, they yielded plenty of those metals anciently ( 1 Chronicles 22:3 , 1 Chronicles 29:2-7 , Isaiah 60:17 ).

11-20. Beware that thou forget not the Lord--After mentioning those instances of the divine goodness, Moses founded on them an argument for their future obedience.

15. Who led thee through that great and terrible wilderness, wherein were fiery serpents, and scorpions--Large and venomous reptiles are found in great numbers there still, particularly in autumn. Travellers must use great caution in arranging their tents and beds at night; even during the day the legs not only of men, but of the animals they ride, are liable to be bitten.
who brought thee forth water out of the rock of