Birkat Hamazon – The Making of The Complete Jew
At the conclusion of Sefer Bemidbar (the Book of Numbers), the children of Israel stood on the threshold of entering the land that God had promised them:
And the Lord spoke to Moshe, saying: “Charge the children of Israel, and you shall say to them: ‘When you come into the land of Canaan, this is the land that shall fall to you as an inheritance—the land of Canaan according to its borders.’” (Numbers 34:1–2)
A midrash dating from the sixth or seventh century raises an intriguing, though admittedly anachronistic, religious question in the characteristic style of the Sages:
Let our master instruct us: Before Israel entered the land, how did they recite Birkat Hamazon?
Projecting the later practice of grace after meals back into Israel’s wilderness years, the midrash offers a religiously meaningful account of the prayer’s development:
Thus have our masters taught: Before they entered the land, they recited only a single blessing, ha-zan et ha-kol — “Who sustains all.” When they entered the land, they ordained the blessing al ha-aretz........
