“Then the Lord said to Moses, “I will rain down bread from heaven for you. The people are to go out each day and gather enough for that day. In this way I will test them and see whether they will follow my instructions. On the sixth day they are to prepare what they bring in, and that is to be twice as much as they gather on the other days.” Exodus 16:4-5
When the Israelites were liberated from Egypt by God, they were led into the desert by Moses and almost immediately started to grumble and complain, wishing that they had died in Egypt, rather than be led into starvation in the wilderness. The situation must have been tough and they were undoubtedly tired and hungry, as well as disappointed that God had taken them to the desert, instead of somewhere more suitable and habitable.