And when the sun was setting, a deep sleep fell upon Abram, and a great and darksome horror seized upon him.

And the sun is about to go in, and deep sleep hath fallen upon Abram, and lo, a terror of great darkness is falling upon him;

Now when the sun was going down, a deep sleep came on Abram, and a dark cloud of fear.

And it came to pass, that, when the sun was going down, a deep sleep fell upon Abram; and, lo, a dread, even a great darkness, fell upon him.

And when the sun was setting, a deep sleep fell upon Abram, and a dread, great and dark, invaded him.

Et fuit, sole occumbente sopor cecidit super Abram: et ecce, terror tenebrosus et magnus cadens super eum.

A deep sleep fell upon Abram. The vision is now mingled with a dream. Thus the Lord here joins those two kinds of communication together, which I have before related from Numbers 12:6, where it is said, When I appear unto my servants the prophets, I speak to them in a vision or a dream.' mention has already been made of a vision: Moses now relates, that a dream was superadded. A horrible darkness intervened, that Abram might know that the dream is not a common one, but that the whole is divinely conducted; it has, nevertheless, a correspondence with the oracle then present, as God immediately afterwards explains in his own words, "Thou shalt surely know that thy seed shall be a stranger," etc. We have elsewhere said, that God was not wont to dazzle the eyes of his people with bare and empty spectres; but that in visions, the principal parts always belonged to the word. Thus here, not a mute apparition is presented to the eyes of Abram, but he is taught by an oracle annexed, what the external and visible symbol meant. It is, however, to be observed, that before one son is given to Abram, he hears that his seed shall be, for a long time, in captivity and slavery. For thus does the Lord deal with his own people; he always makes a beginning from death, so that by quickening the dead, he the more abundantly manifests his power. It was necessary, in part, on Abram's account, that this should have been declared; but the Lord chiefly had regard to his posterity, lest they should faint in their sufferings, of which, however, the Lord had promised a joyful and happy issue; especially since their long continuance would produce great weariness. And three things are, step by step, brought before them; first, that the sons of Abram must wander four hundred years, before they should attain the promised inheritance; secondly, that they should be slaves; thirdly that they were to be inhumanly and tyrannically treated. Wherefore the faith of Abram was admirable and singular, seeing that he acquiesced in an oracle so sorrowful, and felt assured, that God would be his Deliverer, after his miseries had proceeded to their greatest height. It is, however, asked, how the number of years here given agrees with the subsequent history? Some begin the computation from the time of his departure out of Charran. But it seems more probable that the intermediate time only is denoted; [1] as if he would say, It behoves thy posterity to wait patiently; because I have not decreed to grant what I now promise, until the four hundredth year: yea, up to that very time their servitude will continue.' According to this mode of reckoning, Moses says, (Exodus 12:40,) that the children of Israel dwelt in Egypt four hundred and thirty years: while yet, from the sixth chapter (Genesis 6:1,) we may easily gather, that not more than two hundred and thirty years, or thereabouts, elapsed from the time that Jacob went down thither, to their deliverance. Where then, shall we find the remaining two hundred years, but by referring to the oracle? Of this matter all doubt is removed by Paul, who (Galatians 3:17) reckons the years from the gratuitous covenant of life, to the promulgation of the Law. In short, God does not indicate how long the servitude of the people should be from its commencement to its close, but how long he intended to suspend, or to defer his promise. As to his omitting the thirty years, it is neither a new nor unfrequent thing, where years are not accurately computed, to mention only the larger sums. But we see here, that for the sake of brevity, the whole of that period is divided into four centuries. Therefore, there is no absurdity in omitting the short space of time: this is chiefly to be considered, that the Lord, for the purpose of exercising the patience of his people, suspends his promise more than four centuries.

Footnotes

1 - "Sed magis probabile videtur, notari duntaxat tempus intermedium." Calvin evidently means the time which was to intervene between the giving of the oracle and the exodus from Egypt. -- Ed

A deep sleep - תרדמה tardemah, the same word which is used to express the sleep into which Adam was cast, previous to the formation of Eve; Genesis 2:21.
A horror of great darkness - Which God designed to be expressive of the affliction and misery into which his posterity should be brought during the four hundred years of their bondage in Egypt; as the next verse particularly states.

And when the sun was going down,.... Just setting, descending below the hemisphere; or "about to enter" (m) into his chamber, as Piscator observes, from whence he went forth in the morning, as a strong man to run his race; which at sunset is finished according to human appearance, and the common apprehensions of men, who have thought it goes under the earth, or drops into the ocean, see Psalm 19:5,
a deep sleep fell upon Abram: through the great fatigue he had had the preceding day, in doing what is before related; or rather through a more than ordinary influence of God upon him, which bound up his senses, and cast him into an ecstasy or trance, when he had the following prophecy and vision, which more fully explained to him the emblem he had been conversant with; this was such a sleep as fell on Adam, Genesis 2:21,
and, lo, an horror of great darkness fell upon him; or such darkness as was horrible and terrible, so it was represented to his mind in vision; which signified the great afflictions after expressed by darkness, that should come upon his children in Egypt and elsewhere: and so Jarchi says it refers to the distresses and darkness of their captivities in Egypt, and in other places. The Targumists observe, that Abram in this vision saw the four monarchies that should bring his children into bondage.
(m) "et fuit sol ad intrandum", Montanus, Piscator.

A deep sleep fell upon Abram; with this sleep a horror of great darkness fell upon him: a sudden change. The children of light do not always walk in the light. Several things were then foretold. 1. The suffering state of Abram's seed for a long time. They shall be strangers. The heirs of heaven are strangers on earth. They shall be servants; but Canaanites serve under a curse, the Hebrews under a blessing. They shall be suffers. Those that are blessed and beloved of God, are often sorely afflicted by wicked men. 2. The judgment of the enemies of Abram's seed. Though God may allow persecutors and oppressors to trample upon his people a great while, he will certainly reckon with them at last. 3. That great event, the deliverance of Abram's seed out of Egypt, is here foretold. 4. Their happy settlement in Canaan. They shall come hither again. The measure of sin fills gradually. Some people's measure of sin fills slowly. The knowledge of future events would seldom add to our comfort. In the most favoured families, and most happy lives, there are so many afflictions, that it is merciful in God to conceal what will befall us and ours.

"And when the sun was just about to go down (on the construction, see Ges. 132), and deep sleep (תּרדּמה, as in Genesis 2:21, a deep sleep produced by God) had fallen upon Abram, behold there fell upon him terror, great darkness." The vision here passes into a prophetic sleep produced by God. In this sleep there fell upon Abram dread and darkness; this is shown by the interchange of the perfect נפלה and the participle נפלת. The reference to the time is intended to show "the supernatural character of the darkness and sleep, and the distinction between the vision and a dream" (O. v. Gerlach). It also possesses a symbolical meaning. The setting of the sun prefigured to Abram the departure of the sun of grace, which shone upon Israel, and the commencement of a dark and dreadful period of suffering for his posterity, the very anticipation of which involved Abram in darkness. For the words which he heard in the darkness were these (Genesis 15:13.): "Know of a surety, that thy seed shall be a stranger in a land that is not theirs, and shall serve them (the lords of the strange land), and they (the foreigners) shall oppress them 400 years." That these words had reference to the sojourn of the children of Israel in Egypt, is placed beyond all doubt by the fulfilment. The 400 years were, according to prophetic language, a round number for the 430 years that Israel spent in Egypt (Exodus 12:40). "Also that nation whom they shall serve will I judge (see the fulfilment, Exodus 6:11); and afterward shall they come out with great substance (the actual fact according to Exodus 12:31-36). And thou shalt go to thy fathers in peace, and be buried in a good old age (cf. Genesis 25:7-8); and in the fourth generation they shall come hither again." The calculations are made here on the basis of a hundred years to a generation: not too much for those times, when the average duration of life was above 150 years, and Isaac was born in the hundredth year of Abraham's life. "For the iniquity of the Amorites is not yet full." Amorite, the name of the most powerful tribe of the Canaanites, is used here as the common name of all the inhabitants of Canaan, just as in Joshua 24:15 (cf. Genesis 10:5), Judges 6:10, etc.).
By this revelation Abram had the future history of his seed pointed out to him in general outlines, and was informed at the same time why neither he nor his descendants could obtain immediate possession of the promised land, viz., because the Canaanites were not yet ripe for the sentence of extermination.

And when the sun was going down - About the time of the evening oblation. Early in the morning, while the stars were yet to be seen, God had given him orders concerning the sacrifices, Genesis 15:5, and we may suppose it was at least his morning's work to prepare them, and set them in order; which when he had done, he abode by them praying and waiting 'till towards evening. A deep sleep fell upon Abram - Not a common sleep through weariness or carelessness, but a divine extasy, that being wholly taken off from things sensible, he might be wholly taken up with the contemplation of things spiritual. The doors of the body were locked up, that the soul might be private and retired, and might act the more freely. And lo, a horror of great darkness fell upon him - This was designed to strike an awe upon the spirit of Abram, and to possess him with a holy reverence. Holy fear prepares the soul for holy joy; God humbles first, and then lifts up.