All the firstborn of Egyptians, including that of Pharaoh of Egypt, were killed by the LORD when He went in the midst of the land of Egypt that night. It was because of this serious plague that was brought on Egyptians and Pharaoh that they believed that God of Israel was powerful enough to redeem from the bondage of slavery under Pharaoh. It was then that the Pharaoh released the children of Israel from the bondage under him. Thus the children of Israel were saved from perishing.
However, as soon as the children of Israel left Egypt, Pharaoh chased them from behind with his chariots, horses and horsemen. Chariots, horses and horsemen were considered as the best weapons of war during those days; probably we could compare them with present day nuclear weapons. The children of Israel had nothing of that kind to protect themselves, but they had the strong and mighty arm of the LORD with them. The outstretched mighty arm of the LORD that delivered them from Egyptians was enough for them to defeat them.
The angel of the LORD who went before them removed Himself and went behind them.. When the Egyptians pursued the children of Israel from behind they saw darkness from the pillar of cloud that stood between them and the children of Israel. When the children of Israel looked back they saw in the light coming out from the pillar of cloud. Thus none of either party could approach one another. God’s protection of His children was so strong that the enemy could not come near them.
Moses raised the rod over the Red Sea at the command of God, and the children of Israel passed the Red Sea on the dry ground in the midst of it when the waters on either side of their pathway stood like heaps until they, their children and their cattle safely passed over to the other side of the sea. When the Egyptians tried to break into the camp of Israel, the angel removed the wheels of the chariots of Pharaoh, and then all their chariots, horses, and horsemen drowned in the sea and were killed. Thus the children of Israel had their physical salvation, under the grace of God, while the might of the evil one perished.
And the angel of God, which went before the camp of Israel, removed and went behind them; and the pillar of the cloud went from before their face, and stood behind them: And it came between the camp of the Egyptians and the camp of Israel; and it was a cloud and darkness to them, but it gave light by night to these: so that the one came not near the other all the night. (Exodus 14:19-20)
God provided heavenly bread called “Manna” for them to eat and protected them throughout their journey through the wilderness for forty years. However, whenever the children of Israel committed abomination in the sight of the LORD by either worshipping other gods in the form of idols and/or committed whoredom, God chastised them heavily.
It was so sad that they committed wickedness repeatedly in the sight of the LORD and transgressed His commands. God chastised them over and over whenever they caused anger in the LORD’s heart by committing wickedness in His sight. Every time they were chastised they returned to God crying in repentance because they would be unable to bear the chastisement and God forgave them. They again fall into sin, and when they are chastised they cry in repentance and God would forgive them, and they commit sin again. This was like a cycle in their lives, until God’s anger burst against them when none of the generation that left from Egypt including Moses entered the Promised Land. Only the children born en-route their journey to Canaan, led by Joshua and Caleb entered the Promised Land.
If we were in that position, probably we would do greater wickedness than they did; who knows! Not that we are perfect, but these things happened the lives of Israel and recorded for our correction and reproof.
Most of the staunch followers of God committed sin in their lives, as we read in the Old Testament, and they cried unto the LORD when they were chastised by Him. King David was a great example of falling into sin with Bathsheba and conspiring against her husband Uriah. However, he did not do such transgression as King Saul did in disobeying the LORD, but did what was right in the sight of the LORD, repented of his sin, and, therefore, he was restored. In fact, God knew in His foreknowledge that David shall fulfill all His will, and, therefore, God called him as “a man after mine own heart”.
And when he had removed him, he raised up unto them David to be their king; to whom also he gave testimony, and said, I have found David the son of Jesse, a man after mine own heart, which shall fulfil all my will. (Acts 13:22)