Born in the land - A stranger or foreigner might be born in the land, but the word here used means "a native of the land," belonging to the country by virtue of descent, that descent being reckoned from Abraham, to whom Canaan was promised as a perpetual inheritance.

No leaven found in your houses - To meet the letter of this precept in the fullest manner possible, the Jews, on the eve of this festival, institute the most rigorous search through every part of their houses, not only removing all leavened bread, but sweeping every part clean, that no crumb of bread shall be left that had any leaven in it. And so strict were they in the observance of the letter of this law, that if even a mouse was seen to run across the floor with a crumb of bread in its mouth, they considered the whole house as polluted, and began their purification afresh. We have already seen that leaven was an emblem of sin, because it proceeded from corruption; and the putting away of this implied the turning to God with simplicity and uprightness of heart. See on Exodus 12:8 (note), and Exodus 12:27 (note).

Seven days there shall be no leaven found in your houses,..... Wherefore, on the fourteenth day the most diligent search was made, and whatever was found was burnt, or cast into the sea, or dispersed with the wind; about which the traditionary writers of the Jews, give many rules and canons; see Gill on Exodus 12:15,

for whoso eateth that which is leavened, even that soul shall be cut off from the congregation of Israel; which is repeated to deter them from the breach of this ordinance; See Gill on Exodus 12:15, and it is added for further explanation, of whom it concerns:

whether he be a stranger, or born in the land; by a "stranger" is meant, not a mere Heathen, who was not bound by this law, but a proselyte; and not a proselyte of the gate, one that was only a sojourner among them, and observed the commandments of the sons of Noah; but a proselyte of righteousness, who professed the Jewish religion, and proposed to conform to it in all respects, and therefore was obliged to observe this as other precepts: and by one "born in the land", is intended a native of the land of Canaan, whither they were now going in order to possess it, or a real Israelite, such as were born of Israelitish parents, and proper inhabitants of Canaan, which they would be put into the possession of.

Seven days shall there be no leaven found in your houses: for whosoever eateth that which is leavened, even that soul shall be cut off from the congregation of Israel, whether he be a stranger, or born in the land.

12:19 A stranger - A proselyte. Heathens were not concerned in the passover.

19. stranger-No foreigner could partake of the passover, unless circumcised; the "stranger" specified as admissible to the privilege must, therefore, be considered a Gentile proselyte.

12:1-20 The Lord makes all things new to those whom he delivers from the bondage of Satan, and takes to himself to be his people. The time when he does this is to them the beginning of a new life. God appointed that, on the night wherein they were to go out of Egypt, each family should kill a lamb, or that two or three families, if small, should kill one lamb. This lamb was to be eaten in the manner here directed, and the blood to be sprinkled on the door-posts, to mark the houses of the Israelites from those of the Egyptians. The angel of the Lord, when destroying the first-born of the Egyptians, would pass over the houses marked by the blood of the lamb: hence the name of this holy feast or ordinance. The passover was to be kept every year, both as a remembrance of Israel's preservation and deliverance out of Egypt, and as a remarkable type of Christ. Their safety and deliverance were not a reward of their own righteousness, but the gift of mercy. Of this they were reminded, and by this ordinance they were taught, that all blessings came to them through the shedding and sprinkling of blood. Observe, 1. The paschal lamb was typical. Christ is our passover, 1Co 5:7. Christ is the Lamb of God, Joh 1:29; often in the Revelation he is called the Lamb. It was to be in its prime; Christ offered up himself in the midst of his days, not when a babe at Bethlehem. It was to be without blemish; the Lord Jesus was a Lamb without spot: the judge who condemned Christ declared him innocent. It was to be set apart four days before, denoting the marking out of the Lord Jesus to be a Saviour, both in the purpose and in the promise. It was to be slain, and roasted with fire, denoting the painful sufferings of the Lord Jesus, even unto death, the death of the cross. The wrath of God is as fire, and Christ was made a curse for us. Not a bone of it must be broken, which was fulfilled in Christ, Joh 19:33, denoting the unbroken strength of the Lord Jesus. 2. The sprinkling of the blood was typical. The blood of the lamb must be sprinkled, denoting the applying of the merits of Christ's death to our souls; we must receive the atonement, Ro 5:11. Faith is the bunch of hyssop, by which we apply the promises, and the benefits of the blood of Christ laid up in them, to ourselves. It was to be sprinkled on the door-posts, denoting the open profession we are to make of faith in Christ. It was not to be sprinkled upon the threshold; which cautions us to take heed of trampling under foot the blood of the covenant. It is precious blood, and must be precious to us. The blood, thus sprinkled, was a means of preserving the Israelites from the destroying angel, who had nothing to do where the blood was. The blood of Christ is the believer's protection from the wrath of God, the curse of the law, and the damnation of hell, Ro 8:1. 3. The solemn eating of the lamb was typical of our gospel duty to Christ. The paschal lamb was not to be looked upon only, but to be fed upon. So we must by faith make Christ our own; and we must receive spiritual strength and nourishment from him, as from our food, see Joh 6:53,55. It was all to be eaten; those who by faith feed upon Christ, must feed upon a whole Christ; they must take Christ and his yoke, Christ and his cross, as well as Christ and his crown. It was to be eaten at once, not put by till morning. To-day Christ is offered, and is to be accepted while it is called to-day, before we sleep the sleep of death. It was to be eaten with bitter herbs, in remembrance of the bitterness of their bondage in Egypt; we must feed upon Christ with sorrow and brokenness of heart, in remembrance of sin. Christ will be sweet to us, if sin be bitter. It was to be eaten standing, with their staves in their hands, as being ready to depart. When we feed upon Christ by faith, we must forsake the rule and the dominion of sin; sit loose to the world, and every thing in it; forsake all for Christ, and reckon it no bad bargain, Heb 13:13,14. 4. The feast of unleavened bread was typical of the Christian life, 1Co 5:7,8. Having received Christ Jesus the Lord, we must continually delight ourselves in Christ Jesus. No manner of work must be done, that is, no care admitted and indulged, which does not agree with, or would lessen this holy joy. The Jews were very strict as to the passover, so that no leaven should be found in their houses. It must be a feast kept in charity, without the leaven of malice; and in sincerity, without the leaven of hypocrisy. It was by an ordinance for ever; so long as we live we must continue feeding upon Christ, rejoicing in him always, with thankful mention of the great things he has done for us.