"So he raised up their sons in their place, and these were the ones Joshua circumcised. And after the whole nation had been circumcised, they remained where they were in camp until they were healed." NIV translation
God began the principle of the remnant at this time. Throughout the rest of the Bible, God will always have a portion of His people remaining on the earth until Jesus returns to establish His kingdom. Those who had left Egypt and refused to take Canaan died but God preserved His people through their children. These are the people that were consecrated to God and returned to the covenant.
"Then the Lord said to Joshua, 'Today I have rolled away the reproach of Egypt from you.' So the place has been called Gilgal to this day." NIV translation
It must have been shameful as the Israelites had wandered around in the desert for forty years. The surrounding nations would have heard of their wandering and the fact that God was judging them for their disobedience. That shame was removed by the fact that God had led them into Canaan in a big way.
Only God could remove their shame and the same is true for us, as Christians. As sinners, the things that we do bring shame upon ourselves and our family but, by the power of God, that shame is removed when we accept Jesus Christ.
On the evening of the fourteenth day of the month, while camped at Gilgal on the plains of Jericho, The Israelites celebrated the Passover." NIV translation
As we saw, the lamb was selected for the Passover on the tenth and was taken care of for four days. At the end of the four days, the lamb was killed and the people ate the Passover meal. They did this to remember the fact that the angel of death had passed over their homes while they were in Egypt. As we know, this lamb was a picture of Jesus going to the cross on our behalf.
"The day after the Passover, that very day, they ate some of the produce of the land: unleavened bread and roasted grain. The manna stopped the day after they ate this food from the land; there was no longer any manna for the Israelites, but that year they ate the produce of Canaan." NIV translation
For forty years the Israelites had eaten quail and manna but that ended with the Passover lamb. That was "deliverance food" and was basic food to get them to their destination. With the renewal of the covenant, they were back in the will of God. This deliverance food is sorta like the basics of the gospel of Jesus Christ because we just need a basic knowledge of sin and our need for a Savior to get to the point of salvation.
The Passover celebrated their deliverance and the very next day they ate food that had grown in the Promised Land. In the days to come they would have a variety of foods to eat and it reminds us of the fact that all of the scriptures are food for our souls. After we accept Jesus Christ as our Lord and Savior, we can feast on His Word and learn to appreciate Him more and more.
On the second day, the manna and quail stopped and it reminds us of the fact that there is a set amount of time for each of us to hear and either accept or reject the gospel. With this in mind, we should have a renewed sense of urgency in telling people about Jesus. As we see in Revelation, soon the "deliverance food" will cease and judgment will begin.