Psalms 106:14

Those that will not wait for God's counsel, shall justly be given up to their own hearts' lusts, to walk in their own counsels. An undue desire, even for lawful things, becomes sinful. God showed his displeasure for this. He filled them with uneasiness of mind, terror of conscience, and self-reproach. Many that fare deliciously every day, and whose bodies are healthful, have leanness in their souls: no love to God, no thankfulness, no appetite for the Bread of life, and then the soul must be lean. Those wretchedly forget themselves, that feast their bodies and starve their souls. Even the true believer will see abundant cause to say, It is of the Lord's mercies that I am not consumed. Often have we set up idols in our hearts, cleaved to some forbidden object; so that if a greater than Moses had not stood to turn away the anger of the Lord, we should have been destroyed. If God dealt severely with Moses for unadvised words, what do those deserve who speak many proud and wicked words? It is just in God to remove those relations that are blessings to us, when we are peevish and provoking to them, and grieve their spirits.

But lusted exceedingly in the wilderness. Though they would not wait God's will, they are hot to have their own. When the most suitable and pleasant food was found them in abundance, it did not please them long, but they grew dainty and sniffed at angel's food, and must needs have flesh to eat, which was unhealthy diet for that warm climate, and for their easy life. This desire of theirs they dwelt upon till it became a mania with them, and, like a wild horse, carried away its rider. For a meal of meat they were ready to curse their God and renounce the land which floweth with milk and honey. What a wonder that the Lord did not take them at their word! It is plain that they vexed him greatly, And tempted God in the desert. In the place where they were absolutely dependent upon him and were everyday fed by his direct provision, they had the presumption to provoke their God. They would have him change the plans of his wisdom, supply their sensual appetites, and work miracles to meet their wicked unbelief: these things the Lord would not do, but they went as far as they could in trying to induce him to do so. They failed not in their wicked attempt because of any goodness in themselves, but because God "cannot be tempted, " —temptation has no power over him, he yields not to man's threats or promises.