Book 16 says the Family Pledge cannot be spoken truthfully while mind and body are divided, while spouses are fighting, or while generational unity remains broken. The point is not perfectionism. It is that heavenly speech is supposed to arise from embodied alignment.
That turns the pledge into a diagnostic as much as a declaration. It reveals whether a household is moving toward the unity it names.
This matters pastorally because it keeps theology from floating free of practice. A family cannot credibly pledge oneness while rehearsing division.