v1-3: The journey continued into the Desert of Sin. They are now 45 days into their journey. In the desert the people grumbled against Moses and Aaron. The problem was that there was no food in the desert. They now remembered Egypt as a place of plenty, forgetting the suffering that they had endured. In seems unlikely that, as slaves, they had enjoyed "all the food we wanted."
v4: The Lord's provision again came with a command as a test of their trust and obedience. Again, this is a sign of His love for His own. They had to trust Him through temporary hardship, looking forward to the abundant provision of the land flowing with milk and honey. Compare 2 Cor 4.16-18.
v5: The double provision on the sixth day. They were to prepare food for the seventh day, when none would be provided. The principle of the seventh day of rest, which had been established at Creation, would be a feature of the life of the Israelites. See 31.12.
v7-8: Their grumblings were against the Lord. We should not grumble against what He has given us. The glory of God would be seen in the provision of meat and bread. The amounts to be provided are staggering, given that 600,000 men, plus women and children had to be fed. Notice, too, Moses' humility, "Who are we?"
v9: Would the people be willing to grumble directly to the Lord?
v10: The glory of the Lord appeared in the cloud. But even this did not stop their murmurings.
v11-12: The answer for Moses to give to the people, "I have heard", for nothing is secret from Him. The promise was that the people would be filled with food from God.
v13-15: The provision of quail and manna, Ps 105.40. Here was bread from the Lord, see John 6.35, a foretaste of the true bread of Christ. This food was remarkable, meeting all their physical needs, thus picturing Christ.
The questions of man reflect amazement at the glory of God; "What is it?"; "What is this?" (Mark 1.27), "Who can this be?" (Mark 4.41).
v16-18: Each one had to gather bread for himself, teaching personal responsibility (John 6.53,54,66); we must feed individually on Christ, not depending on His provision for another. And all the people had sufficient.
v19-20: The clear command not to keep any overnight. Even this was disobeyed, and the food went rotten.
Moses was angry with the people; even though they had only left Egypt a few weeks before, his patience is already being stretched.
v21: The people were not to leave it too late, but to gather the bread early, for the needs of each day. We are to walk with Christ each day, and to feed on Him each day.
v22-23: The seventh day, the Sabbath. Each one had to gather twice as much as usual on the sixth day, and it would not go rotten; contrast v19-20.
v24-26: The Lord honoured His word. This was another miracle, occurring weekly for 40 years. In this provision, there is a clear command not to gather manna on the Sabbath.
v27-28: In spite of the Lord's clear command, some people went out on the Sabbath day to find manna. They found none.
v29-30: The explanation, from the Lord, that two days' food was provided on the previous day, so that no-one need go out on that day.
It seems the people even stretched the Lord God's patience, if that is possible, "how long will you refuse to keep my commands?"
v31: The bread was called "manna", meaning "what is it?"
v32-34: A portion of manna was to be kept as a reminder of God's provision for the people. It would also remind generations to come of the grumbling of the people. Aaron kept this in a jar before the Lord. When the tabernacle was constructed, this was put in the Holy of Holies, and later kept in the temple (Heb 9.2).
v35: The Israelites ate manna for 40 years, until they entered Canaan, John 5.12. This demonstrated God's faithfulness, whatever the attitude of the people.