"Those passing through the valley of weeping make it a well; also
blessings shall cover the teacher" (Ps. lxxxiv. 6, A.V.). "The valley of
weeping" is Gehenna. "Make it a well," for their tears are like a well
or spring. "Also blessings shall cover the teacher." Rabbi Yochanan
saith, "The praises of God that ascend from Gehenna are more than those
that ascend from Paradise, for each one that is a step higher than his
neighbor praises God, and says, 'Happy am I that I am a step higher than
the one below me.' 'Also blessings shall cover the teacher,' for they
will acknowledge and say, 'Ye have taught well, and ye have instructed
well, but we have not obeyed.'"
THE MIDRASHIM, _Yalkut Tehillim_, 84.