Exodus 13:11-22

“This is what you must do when the LORD fulfills the promise he swore to you and to your ancestors. When he gives you the land where the Canaanites now live, you must present all firstborn sons and firstborn male animals to the LORD, for they belong to him. A firstborn donkey may be bought back from the LORD by presenting a lamb or young goat in its place. But if you do not buy it back, you must break its neck. However, you must buy back every firstborn son. “And in the future, your children will ask you, ‘What does all this mean?’ Then you will tell them, ‘With the power of his mighty hand, the LORD brought us out of Egypt, the place of our slavery. Pharaoh stubbornly refused to let us go, so the LORD killed all the firstborn males throughout the land of Egypt, both people and animals. That is why I now sacrifice all the firstborn males to the LORD—except that the firstborn sons are always bought back.’ This ceremony will be like a mark branded on your hand or your forehead. It is a reminder that the power of the LORD’s mighty hand brought us out of Egypt.” When Pharaoh finally let the people go, God did not lead them along the main road that runs through Philistine territory, even though that was the shortest route to the Promised Land. God said, “If the people are faced with a battle, they might change their minds and return to Egypt.” So God led them in a roundabout way through the wilderness toward the Red Sea. Thus the Israelites left Egypt like an army ready for battle. Moses took the bones of Joseph with him, for Joseph had made the sons of Israel swear to do this. He said, “God will certainly come to help you. When he does, you must take my bones with you from this place.” The Israelites left Succoth and camped at Etham on the edge of the wilderness. The LORD went ahead of them. He guided them during the day with a pillar of cloud, and he provided light at night with a pillar of fire. This allowed them to travel by day or by night. And the LORD did not remove the pillar of cloud or pillar of fire from its place in front of the people.