When the seventy elders were appointed, and the spirit of the Lord came upon them, all the women lighted the candles of joy, to celebrate by this illumination the elevation of these men to the dignity of prophets. Zipporah, Moses' wife, saw the illumination, and asked Miriam to explain it. She told her the reason, and added, "Blessed are the women who behold with their eyes how their husbands are raised to dignity." Zipporah answered, "It would be more proper to say, 'Woe to the wives of these men who must now abstain from all conjugal happiness!'" Miriam: "How does thou know this?" Zipporah: "I judge so from the conduct of thy brother, for ever since he was chosen to receive Divine revelations, he no longer knows his wife."  Miriam hereupon went to Aaron, and said to him: "I also received Divine revelations, but without being obliged to separated myself from my husband," whereupon Aaron agreed, saying" "I, too, received Divine revelations, without, however, being obliged to separated myself from my wife." Then both said: "Our fathers also received revelations, but without discontinuing their conjugal life. Moses abstains from conjugal joys only out of pride, to show how holy a man he is." Not only did they speak evil of Moses to each other, but hastened to him and told him to his face their opinion of his conduct.  But he, who could be self-assured and stern when it touched a matter concerning God's glory, was silent to the undeserved reproached they heaped upon him, knowing that upon God's bidding he had foresworn earthly pleasures. God therefore said: "Moses is very meek and pays no attention to the injustice meted out to him, as he did when My glory was detracted from, and boldly stepped forth and exclaimed, 'Who is on the Lord's side? Let him come unto me.' I will therefore now stand by him."
It is quite true that this was not the only occasion on which Moses proved himself humble and gentle, for it was part of his character. Never among mortals, counting even the three Patriarchs, was there more meek a man than he. The angels alone excelled him in humility, but no human being; for the angels are so humble and meek, that when the assemble to praise God, each angel calls to the other and asks him to precede him, saying among themselves: "Be thou the first, thou are worthier than I." 
God carried out His intention to uphold Moses' honor, for just as Aaron was with his wife and Miriam with her husband, a Divine call suddenly reached Amram's three children, one voice that simultaneously called, "Aaron!" "Moses!" and "Miriam!" - a miracle that God's voice alone can perform. The call went to Moses also, that the people might not think that Aaron and Miriam had been chosen to take Moses' place. He was ready to hearken to God's words, but not so his brother and his sister, who had been surprised in the state of uncleanness, and who therefore, upon hearing God's call, cried, "Water, water," that they might purify themselves before appearing before God.  They then left their tents and followed the voice until God appeared in a pillar of cloud, a distinction that was conferred also upon Samuel. The pillar of cloud did not, however, appear in the Tabernacle, where it always rested whenever God revealed Himself to Moses, and this was due to the following reasons. First of all, God did not want to create the impression of having removed Moses from his dignity, and of giving it to his brother and sister, hence He did not appear to them in the holy place. At the same time, moreover, Aaron was spared the disgrace of being reproached by God in his brother's presence, for Moses did not follow his brother and sister, but awaited God's word in the sanctuary. But there was still another reason why God did not want Moses to be present during His conference with Aaron and Miriam - "Never praise a man to his face." As God wanted to praise Moses before Aaron and Miriam, He preferred to do so in his absence. 
Hardly had God addressed Aaron and Miriam, when they began to interrupt Him, whereupon He said to them: "Pray, contain yourselves until I have spoken." In these words He taught people the rule of politeness, never to interrupt. He then said: "Since the creation of the world hath the word of God ever appeared to any prophet otherwise than in a dream? Not so with Moses, to whom I have shown what is above and what is below; what it before and what it behind; what was and what will be. To him have I revealed all that is in the water and all that is upon the dry land; to him did I confide the sanctuary and set him above the angels. I Myself ordered him to abstain from conjugal life, and the word he received was revealed to him clearly and not in dark speeches, he saw the Divine presence from behind when It passed by him. Wherefore then were ye not afraid to speak against a man like Moses, who is, moreover, My servant? Your censure is directed to Me, rather than to him, for 'the receiver is no better than the thief,' and if Moses is not worthy of his calling, I, his Master, deserve censure."