Exodus, Chapter 11, verse 10
4 Moses threateneth Pharaoh with the death of the firstbornExodus, Chapter 12, verses 1-14
1 The beginning of the year is changed, 3 The Passover is instituted, 11 The Rite of the PassoverMatthew, Chapter 12, verses 1-8
1 Christ reproveth the blindness of the Pharisees concerning the breach of the Sabbath, 3 by Scriptures12
12:1 His disciples plucked the ears of corn, and ate - Just what sufficed for present necessity: dried corn was a common food among the Jews. Mar 2:23; Luk 6:1.
12:3 Have ye not read what David did - And necessity was a sufficient plea for his transgressing the law in a higher instance.
12:4 He entered into the house of God - Into the tabernacle. The temple was not yet built. The show bread - So they called the bread which the priest, who served that week, put every Sabbath day on the golden table that was in the holy place, before the Lord. The loaves were twelve in number, and represented the twelve tribes of Israel: when the new were brought, the stale were taken away, but were to be eaten by the priests only. Mat 21:6.
12:5 The priests in the temple profane the Sabbath - That is, do their ordinary work on this, as on a common day, cleansing all things, and preparing the sacrifices. A greater than the temple - If therefore the Sabbath must give way to the temple, much moremust it give way to me.
12:7 I will have mercy and not sacrifice - That is, when they interfere with each other, I always prefer acts of mercy, before matters of positive institution: yea, before all ceremonial institutions whatever; because these being only means of religion, are suspended of course, if circumstances occur, wherein they clash with love, which is the end of it. Mat 9:13.
12:8 For the Son of man - Therefore they are guiltless, were it only on this account, that they act by my authority, and attend on me in my ministry, as the priests attended on God in the temple: is Lord even of the Sabbath - This certainly implies, that the Sabbath was an institution of great and distinguished importance; it may perhaps also refer to that signal act of authority which Christ afterward exerted over it, in changing it from the seventh to the first day of the week. If we suppose here is a transposition of the 7th and 8th verses, then the 8th verse is a proof of the 6th. Mat 12:6-8.

11 Pharaoh had bid Moses get out of his presence, Exo 10:28.
and Moses had promised this should be the last time he would trouble him, yet he refuses to say out what he had to say, before he left him. Accordingly we have in this chapter,
together with the interest Israel and Moses had in the esteem of the Egyptians, Exo 11:3.
and the event answering it, Exo 11:10.
12 This chapter gives an account of one of the most memorable ordinances, and one of the most memorable providences of all that art recorded in the old testament.
with the reason for it, Exo 12:11-13.
This institution is communicated to the people, and they instructed in the observance.
And the Israelites obedience to these orders, Exo 12:28.
This event is dated, Exo 12:40-42.
2dly. Of this memorable providence, Exo 12:50-51.
12:1 The Lord spake - Had spoken, before the three days darkness. But the mention of it was put off to this place, that the history of the plagues might not be interrupted.
12:2 This shall be to you the beginning of months - They had hitherto begun their year from the middle of September, but hence - forward they were to begin it from the middle of March, at least in all their ecclesiastical computations. We may suppose that while Moses was bringing the ten plagues upon the Egyptians, he was directing the Israelites to prepare for their departure at an hour's warning.Probably he had, by degrees, brought them near together from their dispersions, for they are here called the congregation of Israel; and to them, as a congregation, orders are here sent.
12:3 Take every man a lamb - In each of their families, or two or three families, if they were small, join for a lamb. The lamb was to be got ready four days before. and that afternoon they went, they were to kill it, (Exo 12:6,) as a sacrifice, not strictly, for it was not offered upon the altar, but as a religious ceremony, acknowledging God's goodness to them, not only in preserving them from, but in delivering them by the plagues inflicted on the Egyptians. The lamb so slain they were to eat roasted (we may suppose in its several quarters) with unleavened bread and bitter herbs; they were to eat it in haste, Exo 12:11, and to leave none of it until the morning; for God wouldhave them to depend upon him for their daily bread. Before they eat the flesh of the lamb, they were to sprinkle the blood upon the door - posts; by which their houses were to be distinguished from the houses of the Egyptians, and so their first - born secured from the sword of the destroying angel. Dreadful work was to be made this night in Egypt; all the first - born both of man and beast were to be slain; and judgment executed upon the gods of Egypt, Num 33:4. It is probable the idols which the Egyptians worshipped were defaced, those of metal melted, those of wood consumed, and those of stone broke to pieces. This was to be annually observed as a feast of the Lord in their generations, to which the feast of unleavened bread was annexed, during which, for seven days, they were to eat no bread but what was unleavened, in remembrance of their being confined to such bread for many days after they came out of Egypt, Exo 12:14-20. There was much of the gospel in this ordinance:
12:9 Raw - Half roasted, but throughly drest.
12:10 Ye shall burn with fire - To prevent the profane abuse of it.
12:11 The Lord's passover - A sign of his passing over you, when he destroyed the Egyptians.