Numbers 12:2 And they said, Hath the Lord indeed spoken only by Moses? hath he not spoken also by us? And the Lord heard it. 3 (Now the man Moses was very meek, above all the men which were upon the face of the earth.)
[Patriarchs & Prophets pp 382>383] In the appointment of the seventy elders Miriam and Aaron had not been consulted, and their jealousy was excited against Moses. At the time of Jethro's visit, while the Israelites were on the way to Sinai, the ready acceptance by Moses of the counsel of his father-in-law had aroused in Aaron and Miriam a fear that his influence with the great leader exceeded theirs. In the organization of the council of elders they felt that their position and authority had been ignored. Miriam and Aaron had never known the weight of care and responsibility which had rested upon Moses; yet because they had been chosen to aid him they regarded themselves as sharing equally with him the burden of leadership, and they regarded the appointment of further assistants as uncalled for.
Moses felt the importance of the great work committed to him as no other man had ever felt it. He realized his own weakness, and he made God his counselor. Aaron esteemed himself more highly, and trusted less in God. He had failed when entrusted with responsibility, giving evidence of the weakness of his character by his base compliance in the matter of the idolatrous worship at Sinai. But Miriam and Aaron, blinded by jealousy and ambition, lost sight of this. Aaron had been highly honored by God in the appointment of his family to the sacred office of the priesthood; yet even this now added to the desire for self-exaltation.
“And they said, Hath the Lord indeed spoken only by Moses? hath He not spoken also by us?” Regarding themselves as equally favored by God, they felt that they were entitled to the same position and authority. Yielding to the spirit of dissatisfaction, Miriam found cause of complaint in events that God had especially overruled. The marriage of Moses had been displeasing to her. That he should choose a woman of another nation, instead of taking a wife from among the Hebrews, was an offense to her family and national pride. Zipporah was treated with ill-disguised contempt.
Exodus 20:17 Thou shalt not covet thy neighbor's house, thou shalt not covet thy neighbor's wife, nor his manservant, nor his maidservant, nor his ox, nor his ass, nor any thing that is thy neighbor's.
May The Lord add His blessing to the study of His word. God bless!