What is the meaning where it is written (Ps. x. 27), "The fear of the Lord prolongeth days, but the years of the wicked shall be shortened; " The fear of the Lord prolongeth days" alludes to the four hundred and ten years the first Temple stood, during which period the succession of high priests numbered only eighteen. But " the years of the wicked shall be shortened • is illustrated by the fact that during the four hundred and twenty years that the second Temple stood the succession of high priests numbered more than three hundred. If we deduct the forty years during which Shimon the Righteous held office, and the eighty of Rabbi Yochanan, and the ten of Rabbi Ishmael ben Rabbi, it is evident that not one of the remaining high priests lived to hold office for a whole year
Why the Second Temple Needed Three Hundred High Priests
Yoma 9a