By his 20s, he was already striving to forge his siblings into a powerful unit, organizing his brothers and sister to confront their father with a demand that the family assets be turned over (gradually) to the next generation.
His siblings threatened they would never return if their father didn't start migrating his assets.
mnli hypothesis: His siblings threatened they would never return if their father didn't start migrating his assets. premise: By his 20s, he was already striving to forge his siblings into a powerful unit, organizing his brothers and sister to confront their father with a demand that the family assets be turned over (gradually) to the next generation.