Midrash sobre Êxodo 34:8

(Ib. 34, 8) And Moses made haste, and bowed his head. What had he seen [that he bowed himself]? R. Chanina b. Gamla said: "He saw the attribute long-suffering." And the Rabbis said: "He saw the attribute Emeth (truth)." We are taught in a Baraitha in accordance with him who said he had seen the attribute long-suffering, viz: When Moses ascended to heaven, he found that the Holy One, praised be He! was sitting and writing the words long-suffering. And he said before Him: "Sovereign of the Universe! does this mean long-suffering for the righteous ones?" And he was answered: "Even for the wicked." "The wicked," Moses remarked, "ought to perish!" The Lord answered him: "In the future thou wilt see that My previous words will be necessary for thee." Thereafter when Israel sinned, the Lord said to Moses: "Didst thou not say long-suffering [only] for the righteous?" And Moses said before Him: "Sovereign of the Universe, but hast Thou not said to me, 'Also to the wicked'?" And concerning this it is written (Num. 14, 17) (Ib. b) And now, I beseech thee, let the greatness of the power of the Lord be made manifest as Thou hast spoken." R. Chaggi, ascending the steps of the college of Rabba b. Shila, heard a child reciting (Ps. 93, 5) Thy testimonies are exceedingly steadfast. In thy house abideth holiness, O Lord, to the utmost length of days. Immediately he began (Ib. 90, 1) A prayer of Moses. And he then said: "Infer from this that Moses saw the attribute long-suffering."