The Israelites accuse Moses of not dealing with them fairly, murmuring that he should not have led them out of Egypt. This occurs just days after they went out with a high hand in the sight of all the Egyptians, joyful that they were free. How quickly their faith evaporated when fear began closing in on them!
The Egyptians, their horses, their chariots, all the shining army and might of Egypt were represented there. The Israelites' backs were up against the sea, and they could see the death sentence approaching them as fast as a horse could pull a chariot. They thought their lives were hanging in a balance when they saw the army. The end of their lives was quickly coming within view.
Had not God given them enough evidence through all His plagues against Egypt? Had He not given them enough evidence to impact their thinking, clearly dividing the Israelites from the Egyptians, beginning with the fourth plague? All of the plagues fell on Egypt, but none of them after that fell on the Israelites. Had He not impressed their minds enough on Passover when the blood of the Lamb enabled their firstborn to live while the Egyptians' died?
We can learn and grow from this lesson. In principle, we all come to our own personal Red Sea. Every one of us fails repeatedly, just as Israel did when they lost their faith for a while. What we go through when we come up against our personal Red Sea is very similar to what Israel went through.
God rescued and chastened them, but He did not dump them. He shows that He will continue to work patiently with us just as a teacher continues to work with students, even though some fail and rarely do anything well. A teacher is faced with the same principle that we are involved in with God. The teacher does not want to fail students, so he uses all of his time, energy, and efforts to encourage and instruct so that those who are failing will turn around, catch the vision, and begin to apply the right teaching.
God thinks of time in the same way a teacher does: “There is still time to catch this person's interest and turn them around.” Therefore, God gave the Israelites forty years in the wilderness.
Hebrews 11:29 shows that these people did recover their faith in time to go through the Red Sea. The major reason that they turned themselves around may have largely been because of faithful leadership, primarily by Moses and possibly by others as well. They exhibited some measure of faith, and God faithfully and duly records it.
This ought to encourage those of us who fail from time to time. Many times our faith has failed, but God patiently continues to work with us. We cannot become discouraged, but must keep going on, because God will not stop. He will keep working with us.