Genesis 27:28 - Matthew Poole's English Annotations on the Holy Bible

God give thee, or, will give; for it is both a prayer and a prophecy. He mentions the dew rather than the rain, because it was of more constant use and necessity in those parts than the rain, which fell considerably but twice in a year, the first being called the former, and the other the latter rain. And under this and the following blessings, which are but temporal, are comprehended all manner of blessings, both spiritual, temporal, and eternal, according to the usage of that time and state of the church. The fatness of the earth; a fat and fruitfill land, which Canaan was, abounding with all sorts of precious fruits. Compare Deuteronomy 8:8, Deuteronomy 32:13,14.