Here is the departure of the children of Israel out of Egypt; having obtained their dismission, they set forward without delay, and did not defer to a more convenient season. Pharaoh was now in a good mind; but they had reason to think he would not long continue so, and therefore it was no time to linger. We have here an account, 1. Of their number, about 600,000 men (Exo 12:37), besides women and children, which I think, we cannot suppose to make less than 1,200,000 more. What a vast increase was this, to arise from seventy souls in little more than 200 years' time! See the power and efficacy of that blessing, when God commands it, Be fruitful and multiply. This was typical of the multitudes that were brought into the gospel church when it was first founded; so mightily grew the word of God, and prevailed. 2. Of their retinue (Exo 12:38): A mixed multitude went up with them, hangers on to that great family, some perhaps willing to leave their country, because it was laid waste by the plagues, and to seek their fortune, as we say, with the Israelites; others went out of curiosity, to see the solemnities of Israel's sacrifice to their God, which had been so much talked of, and expecting to see some glorious appearances of their God to them in the wilderness, having seen such glorious appearances of their God for them in the field of Zoan, Psa 78:12. Probably the greatest part of this mixed multitude were but a rude unthinking mob, that followed the crowd they knew not why; we afterwards find that they proved a snare to them (Num 11:4), and it is probable that when, soon afterwards, they understood that the children of Israel were to continue forty years in the wilderness, they quitted them, and returned to Egypt. Note, There were always those among the Israelites that were not Israelites, and there are still hypocrites in the church, who make a deal of mischief, but will be shaken off at last. 3. Of their effects. They had with them flocks and herds, even very much cattle. This is taken notice of because it was long before Pharaoh would give them leave to remove their effects, which were chiefly cattle, Gen 46:32. 4. Of the provision made for the camp, which was very poor and slender. They brought some dough with them out of Egypt in their knapsacks, Exo 12:34. They had prepared to bake, the next day, in order to their removal, understanding it was very near; but, being hastened away sooner than they thought of, by some hours, they took the dough as it was, unleavened; when they came to Succoth, their first stage, they baked unleavened cakes, and, though these were of course insipid, yet the liberty they were brought into made this the most joyful meal they had ever eaten in their lives. Note, The servants of God must not be slaves to their appetites, nor solicitous to wind up all the delights of sense to their highest pitch. We should be willing to take up with dry bread, nay, with unleavened bread, rather than neglect or delay any service we have to do for God, as those whose meat and drink it is to do his will. 5. Of the date of this great event: it was just 430 years from the promise made to Abraham (as the apostle explains it, Gal 3:17) at his first coming into Canaan, during all which time the children of Israel, that is, the Hebrews, the distinguished chosen seed, were sojourners in a land that was not theirs, either Canaan or Egypt. So long the promise God made to Abraham of a settlement lay dormant and unfulfilled, but now, at length, it revived, and things began to work towards the accomplishment of it. The first day of the march of Abraham's seed towards Canaan was just 430 years (it should seem to a day) from the promise made to Abraham, Gen 12:2, I will make of thee a great nation. See how punctual God is to his time; though his promises be not performed quickly, they will be accomplished in their season. 6. Of the memorableness of it: It is a night to be much observed, Exo 12:42. (1.) The providences of that first night were very observable; memorable was the destruction of the Egyptians, and the deliverance of the Israelites by it; God herein made himself taken notice of. (2.) The ordinances of that night, in the annual return of it, were to be carefully observed: This is that night of the Lord, that remarkable night, to be celebrated in all generations. Note, The great things God does for his people are not to be a nine days' wonder, as we say, but the remembrance of them is to be perpetuated throughout all ages, especially the work of our redemption by Christ. This first passover-night was a night of the Lord much to be observed; but the last passover-night, in which Christ was betrayed (and in which the passover, with the rest of the ceremonial institutions, was superseded and abolished), was a night of the Lord much more to be observed, when a yoke heavier than that of Egypt was broken from off our necks, and a land better than that of Canaan set before us. That was a temporal deliverance to be celebrated in their generation; this is an eternal redemption to be celebrated in the praises of glorious saints, world without end.