How long did it take before God gave manna to the Israelites after they left Egypt?
The Israelites celebrated their first Passover the 14th day of the first month and left the same day.
Then we can read in Exodus 15:1 …on the 15th day of the second month after their departure from the land of Egypt. 2 Then the entire assembly of the Israelites began to murmur against Moses and Aaron in the wilderness. 3 The Israelites kept saying to them: “If only we had died by Jehovah’s hand in the land of Egypt while we were sitting by the pots of meat, while we were eating bread to satisfaction. Now you have brought us out into this wilderness to put this whole congregation to death by famine.” 4 Then Jehovah said to Moses: “Here I am raining down bread for you from the heavens, and each of the people should go out to gather his amount day by day, so that I may put them to the test to see whether they will walk in my law or not.”
So within a month they had finished the food they had taken with them from Egypt, and the people started to panic. Apparently they had lost their confidence that God would provide for them. I wonder how many days they were without food? How many days did they go hungry before God gave them manna? How patient would I have been if I had been there?
We can think about Jesus who after his baptism did not eat for 40 days and how hungry he was. Then also Satan came and urged him to miraculously turn stones to bread. I wonder also how much weight Jesus lost during these 40 days?