Moses's Sons Did Not Inherit His Leadership. The Fig Tree Explains Why.
When God told Moses his sons would not succeed him, the reason was not that they were wicked. It was that they did not watch the fig tree. Joshua did.
Moses had two sons: Gershom and Eliezer. They were grown men by the time the succession question arose, old enough to have their own histories and their own families. Their grandfather was the priest of Midian. Their father had stood before Pharaoh and received the Torah at Sinai. The claim they could have made to succession was not trivial.
God told Moses they would not inherit his role. The explanation God gave him, preserved in the Legends of the Jews, drawing from the Talmud Bavli's tractate Bava Batra and from the Midrash on Proverbs, is a single line from Proverbs 27:18: "He that watcheth the fig tree shall eat of its fruits." And then God said directly: "Your sons concerned themselves little with the Torah."
The verse from Proverbs is worth sitting with. It is not about talent or bloodline or charisma. It is about proximity and attention over time. The person who watches the fig tree, who is consistently present to it, who notices when it needs water and when it is ripening and what it looks like on an ordinary Tuesday with nothing dramatic happening, that person earns the fruit. Not the person who inherits the tree. Not the person who is most naturally gifted at agriculture. The person who watches.
Joshua had watched. The tradition's account is specific about what this looked like in practice. In the morning and in the evening he put up the benches in Moses's house of teaching and spread the carpets. He arranged the physical space in which Torah was taught. He set out the seating before students arrived and he took it down after they left. This was not the glamorous work of scholarship. This was the invisible maintenance work that makes scholarship possible, work that nobody thanks you for and that nobody notices you doing, work whose absence would be immediately felt and whose presence is taken for granted.
The Ginzberg tradition, drawing also from the Midrash Rabbah on Deuteronomy compiled in Palestine, understands Joshua's service to Moses as a form of Torah study that was deeper than study, because it was saturated with the consciousness of being in the presence of Torah's living embodiment. He set up the benches. He arranged the carpets. And in doing so, morning and evening, for decades, he became someone whose whole life was organized around the transmission of what Moses carried.
Gershom and Eliezer had the same opportunity. They were Moses's sons. They were in the camp. They had access to the house of teaching that Joshua maintained. What they did with that access, or failed to do with it, is not elaborated in the sources. The tradition does not want to condemn them. It simply notes the absence: they "concerned themselves little." Not never. Little. The distance between a prophet and his successor is sometimes that small a word.
What God did next is as important as the explanation. God instructed Moses to install Joshua publicly, while Moses was still alive, with Moses himself performing the installation. This instruction had a tactical purpose. The Talmud Bavli, redacted in 6th-century Babylon, makes it explicit: if Moses waited until after his death to pass authority to Joshua, the elders of Israel could later say "as long as his teacher was alive he dared not pronounce judgment." They could undermine every decision Joshua made by suggesting that his authority was derivative, secondary, operating in a space that Moses's presence had not yet fully vacated. The public installation during Moses's lifetime foreclosed that argument permanently.
There is also something else happening in this instruction, something quieter. God was asking Moses to be large enough to put another man in his own seat while he was still alive to watch. To dress Joshua in authority. To speak words of succession in public, in his own voice, before his own death. To make the transition real before it was necessary. This is harder than dying. This is the act of a man who has genuinely understood that the work is not about him.
There is a thread in the Midrash Rabbah on Numbers, compiled in 5th-century Palestine, that connects this episode to the broader principle of how divine gifts are transmitted. The tradition observes that the gifts given to Moses, prophecy, legislative authority, the intimate knowledge of the divine will, were gifts held in trust for Israel, not hereditary possessions to be passed to biological children. They could not be inherited. They could only be earned through the kind of service Joshua performed, the service of complete attentiveness. A son who expects inheritance receives nothing. A servant who expects nothing but shows up every morning to arrange the chairs receives everything. This inversion of the expected order is one of the tradition's consistent patterns, and the succession from Moses to Joshua is one of its clearest examples.
Moses's sons watched their father. Joshua watched the fig tree. The fruit went to the one who was present to it, season after season, in the dark before the students arrived and in the quiet after they left, setting up chairs that were not his to sit in.