Deuteronomy 8:10

And thou shalt eat … and … bless, etc.] -The verse is the proof-text for the Jewish custom of prayer at table; possibly, however, the custom is older than our passage; cp. 1 Samuel 9:13 " (Bertholet). D's renewed emphasis that Jehovah is the giver of the land and its fruits: see on Deuteronomy 7:13.