I often thought about how many times as the Israelites wondered through that desert, how often they grumbled. They were always moaning about something.
But can you imagine such a trip? It is hot! It IS the desert. And at night it is cold. It is dusty. They are walking. They have children asking, "are we there yet?" They are carrying all that they own. They have brought some animals, so they need looked after. They have to stop to prepare meals then clean up, then right back on the road. There is little rest.
God gives them miracles. He provides water from a stone. He drops manna from Heaven.
I wonder why He just didn't make them not hungry or thirsty. He could have done that. That would've saved a lot of time, trouble and grumbling.
No, I believe that God wants us to work for somethings. I think that He is waiting for us to come to the realization that He will provide all that we need. We may have to do our part to receive these things. But I think He is wanting us to believe and act without grumbling. He will give us our "manna" we just have to gather it.
Yet we must also remember that we have one day set aside in which to rest and reflect on Him and how good He is to us.
Do we expect God to take care of us without us doing our gathering? Do we grumble and growl instead of believing and acting on His provisions? Do we set aside that day to honor, reflect, and be very grateful for ALL He does?
Six days you shall gather it, but on the seventh day, the sabbath, there will be none." (Exodus 16:26 NASB)