Seven days before Yom Kippur they sequester the Kohen Gadol from his house to the officials' chamber, and they prepare an-other Kohen [to serve] as his substitute, lest he become disqualified.  R' Yehudah says: They also prepare another wife for him, lest his wife die, for it is said: And he shall make atonement for himself and for his house; “his house” —- that is his wife.  They said to him: If so, there is no end to the matter.