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Commentary

Exodus 12:37

And the children of Israel journeyed from Rameses to Succoth, about six hundred thousand on foot that were men, beside children.

From their single ancestor, in not much more than four hundred years, the Hebrew people became so numerous that at the time of the exodus from Egypt there were, we are told, six hundred thousand men of military age. This number does not include the Idumeans, who were not reckoned with the people of Israel, although they were descended from Israel’s brother Esau, who was a grandson of Abraham. Nor does it include those other descendants of Abraham who were not of the line of his wife Sarah.
Exodus 12:46

In one house shall it be eaten; thou shalt not carry forth ought of the flesh abroad out of the house; neither shall ye break a bone thereof.

Now next, that the legs of those two were broken, while his [Christ’s] were not. He was already dead. Why this happened was stated in the Gospel itself. It was fitting, you see, to demonstrate by this sign as well that the true point and purpose of the Jewish Passover, which contained this instruction, not to break the lamb’s bones, was to be a prophetic preenactment of his death.
Exodus 13:21

And the LORD went before them by day in a pillar of a cloud, to lead them the way; and by night in a pillar of fire, to give them light; to go by day and night:

Who can doubt that here too God appeared to the eyes of mortal men by a corporeal creature made subject to him and not by his own substance? But it is also not apparent whether it was the Father, or the Son, or the Holy Spirit, or the Trinity itself, the one God. Nor, as far as I can judge, has this distinction been made in that place where it is written: “And the glory of the Lord appeared in the cloud, and the Lord spoke to Moses saying, ‘I have heard the grumbling of the children of Israel.’ ”

THE TRINITY 2.14.24

Exodus 14:22

And the children of Israel went into the midst of the sea upon the dry ground: and the waters were a wall unto them on their right hand, and on their left.

This people of God, freed from a great and broad Egypt, is led, as through the Red Sea, that in baptism it may make an end of its enemies. For by the sacrament as it were of the Red Sea, that is by baptism consecrated with the blood of Christ, the pursuing Egyptians, the sins, are washed away.
Exodus 15:1 · 2 passages

Then sang Moses and the children of Israel this song unto the LORD, and spake, saying, I will sing unto the LORD, for he hath triumphed gloriously: the horse and his rider hath he thrown into the sea.

As far as we are concerned, you see, they are dead, because they cannot lord it over us anymore; because our very misdeeds, which made us into their subjects, have been, so to say, sunk and obliterated in the sea, when we were set free by the bath of holy grace.
“For he has been gloriously extolled” who has already granted us in the bath of regeneration what we have been singing about: “horse and rider he has cast into the sea.” All our past sins, you see, which have been pressing on us, as it were, from behind, he has drowned and obliterated in baptism. These dark things of ours were being ridden by unclean spirits as their mounts, and like horsemen they were riding them wherever they liked. That’s why the apostle calls them “rulers of this darkness.” We have been rid of all this through baptism, as through the Red Sea, so called because sanctified by the blood of the crucified Lord. Let us not turn back to Egypt in our hearts, but with him as our protector and guide let us wend our way through the other trials and temptations of the desert toward the kingdom.
Exodus 15:4 · 2 passages

Pharaoh's chariots and his host hath he cast into the sea: his chosen captains also are drowned in the Red sea.

The devil had placed “teams of three” in each chariot, who were to terrorize us by haunting us with the fear of pain, the fear of humiliation, the fear of death. All these things were sunk in the Red Sea, because “together with him,” together with the One who for our sakes was scourged, dishonored and slain, “we were buried through baptism into death.” Thus he overwhelmed all our enemies in the Red Sea, having consecrated the waters of baptism with the bloody death which was utterly to consume our sins.
And the worldly pride and arrogance and the troops of innumerable sins which were fighting for the devil in us, he obliterated in baptism.
Exodus 15:5

The depths have covered them: they sank into the bottom as a stone.

But if our enemies “went down into the depths like a stone,” the only ones the devil remains in possession of and the only ones who have the hardness of the devil are those about whom it is written, “When the sinner has come into the depths of evil, he behaves disdainfully.” They don’t believe, you see, that they can be forgiven for what they have done; and in that mood of despair they plummet to greater depths than ever.
Exodus 15:9

The enemy said, I will pursue, I will overtake, I will divide the spoil; my lust shall be satisfied upon them; I will draw my sword, my hand shall destroy them.

The enemy does not understand the power of the Lord’s sacrament, which is available in saving baptism for those who believe and hope in him. He still thinks that sins can prevail even over the baptized, because they are being tempted by the frailty of the flesh. He doesn’t know where and when and how the complete renewal of the whole person is to be perfected, which is begun and prefigured in baptism and is already grasped by the most assured hope.
Exodus 15:12

Thou stretchedst out thy right hand, the earth swallowed them.

Certainly at that time no yawning chasm of the earth swallowed up any of the Egyptians; they were covered by water, they perished in the sea. So what’s the meaning of “You stretched out your right hand, the earth devoured them”? Or are we correct in understanding God’s right hand to be the one of whom Isaiah says, “And the arm of the Lord, to whom has it been revealed”? That, you see, is the only Son, whom the Father did not spare “but handed him over for us all.” And thus he stretched out his right hand on the cross, and the earth devoured the godless, when they thought of themselves as victorious and of him as despicable in defeat.
Exodus 15:20

And Miriam the prophetess, the sister of Aaron, took a timbrel in her hand; and all the women went out after her with timbrels and with dances.

This is what Moses sang and the sons of Israel with him, what Miriam the prophetess sang and the daughters of Israel with her. It is what we too now should sing, whether it means men and women or means our spirit and our flesh. “Those who belong to Christ Jesus,” you see, as the apostle says, “have crucified their flesh with its passions and desires.” This can be suitably understood in the drum which Miriam took to accompany this song: flesh, you see, is stretched over wood to make a drum. So they learn from the cross how to accompany in confession the sweet strains of grace.
Exodus 17:8

Then came Amalek, and fought with Israel in Rephidim.

There is no vice which the divine law resists more [than pride]. That most proud spirit becomes an obstacle to things above and a mediator to things below. It thereby receives a greater power of domination, unless one avoids the secret snares he is laying by going along a different way. If he is openly raging through a sinful people, he is like Amalek. By his opposition he denies the passage to the land of promise. He then must be overcome by the cross of Christ, which was prefigured by the extended hands of Moses.

THE TRINITY 4.15.20

Exodus 18:19

Hearken now unto my voice, I will give thee counsel, and God shall be with thee: Be thou for the people to God-ward, that thou mayest bring the causes unto God:

God spoke to Moses, did he not? Yet Moses very prudently and humbly yielded to the advice of his father-in-law, foreigner though he was, with regard to governing and directing such a mighty nation. For he realized that from whatever intellect right counsel proceeded, it should be attributed not to him who conceived it but to the One who is the Truth, the immutable God.

ON CHRISTIAN TEACHING, PROLOGUE 7

Exodus 18:21

Moreover thou shalt provide out of all the people able men, such as fear God, men of truth, hating covetousness; and place such over them, to be rulers of thousands, and rulers of hundreds, rulers of fifties, and rulers of tens:

Moses in fact took care to appoint teachers of reading and writing for God’s people before they had any written record of God’s law. The Septuagint Scripture calls these instructors grammatoeisagogoı́, which is Greek for “bringers-in of letters,” because they brought them, in a sense, into their students’ minds or perhaps introduced their students to them.
Exodus 19:1 · 3 passages

In the third month, when the children of Israel were gone forth out of the land of Egypt, the same day came they into the wilderness of Sinai.

The Pentecost too we observe, that is, the fiftieth day from the passion and resurrection of the Lord, for on that day he sent to us the Holy Paraclete whom he had promised. This was prefigured in the Jewish Passover, for on the fiftieth day after the slaying of the lamb, Moses on the mount received the law written with the finger of God.

AGAINST FAUSTUS, A MANICHAEAN 32.12

But the fifty-day period is also praised in Scripture, not only in the Gospel, because the Holy Spirit came on the fiftieth day, but even in the Old Testament. Therein fifty days are numbered from the celebration of the pasch by the killing of a lamb to the day on which the law was given on Mt. Sinai to the servant of God, Moses.
We come now to the desert, where the law was given, and this is what Scripture says: “But in the third month from when the people were brought out of Egypt.” The Lord spoke to Moses that those who were going to receive the law should purify themselves in readiness for the third day, on which the law was to be given. So at the beginning of the third month a purification is commanded in readiness for the third day.
Exodus 19:12

And thou shalt set bounds unto the people round about, saying, Take heed to yourselves, that ye go not up into the mount, or touch the border of it: whosoever toucheth the mount shall be surely put to death:

In this wonderful agreement there is the very great difference, that in the Old Testament the people is held back by a fearful dread from approaching the place where the law was given; whereas in the New the Holy Spirit comes upon those who were assembled together waiting for his promised coming.

ON THE SPIRIT AND THE LETTER 17.29

Exodus 19:16

And it came to pass on the third day in the morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of the trumpet exceeding loud; so that all the people that was in the camp trembled.

Again God produces the ordinary lightnings and thunders. But because they were done in an unusual manner on Mt. Sinai, and those voices were spoken there without a confused noise but in such a manner that it was evident from the most unmistakable proofs, … certain significant meanings were attached to them. Then they were miracles.

THE TRINITY 3.5.11

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