In effect, the pater familias was anticipated to be a superior citizen. The pater familias normally had to be a Roman citizen. The domestic obligations of the pater familias incorporated his priestly duties (sacra familiae) to his "household gods" (the lares and penates) and the ancestral gods of his personal gens.
Terriemccull
The functions involved, uniting, had increased and multiplied, which being done, offspring made and educed to maturity, the get-togethers, if not disunited were being obliged to reunite for boost and multiplication, which was absurd, to type by reunion the original pair of uniting functions, which was impossible.