16 And Yahweh said unto Moses, Gather unto me seventy men of the elders of Israel, whom thou knowest to be the elders of the people, and officers over them; and bring them unto the tabernacle of the congregation, that they may stand there with thee.
17 And I will come down and talk with thee there: and I will take of the spirit which is upon thee, and will put it upon them; and they shall bear the burden of the people with thee, that thou bear it not thyself alone.
It should be noted that this is a completely different incident and arrangement from the appointment of captains of thousands, hundreds and tens to judge the people, though both are similar complaints by Moses.
God promised an abundance of meat for a whole month, so that it would surfeit and nauseate them. Even Moses was incredulous, and questioned how it could possibly be done. This gives us an insight into Moses - a man of great faith and dedication, but still struggling with the natural limitations of the flesh.
We must learn, we must believe - that with God all things are possible. Moses was rebuked, but not punished. There is a difference between a struggling faith and a rebellious unbelief.
God gave Israel the meat they cried for, to manifest His power, but He also smote them with a very great plague. And they called the place Kibroth-hattaavah - the graves of lust - summing up the whole natural history of mankind, that toward which all fleshly things tend - the graves of lust.