Job 8:21 Midrash

עַד־יְמַלֵּ֣ה שְׂח֣וֹק פִּ֑יךָ וּשְׂפָתֶ֥יךָ תְרוּעָֽה׃

Till He fill thy mouth with laughter, And thy lips with shouting.

Read midrashic interpretation of Job 8:21: and classical rabbinic exegesis.