The Church Fathers on this verse

Genesis 15:16Meaning & Commentary from the Church Fathers

But in the fourth generation they shall return hither: for as yet the iniquities of the Amorrhites are not at the full until this present time.

Douay-Rheims

וְד֥וֹר רְבִיעִ֖י יָשׁ֣וּבוּ הֵ֑נָּה כִּ֧י לֹא־שָׁלֵ֛ם עֲוֺ֥ן הָאֱמֹרִ֖י עַד־הֵֽנָּה׃

Hebrew (Masoretic text)

The Church Fathers on this verse

7 Church Fathers comment on this verse

John Chrysostom

4th centuryChurch Father

God also establishes the timing for the liberation from bondage. He mentions a duration of 'four hundred years' and subsequently adds, 'in the fourth generation they shall return here.' Some may find it confusing how it is stated they will serve 'four hundred years' when they did not spend even half of that time in Egypt. However, it is clarified that they would not be enslaved 'in Egypt' for four hundred years, but rather 'in a land not their own.' This implies that the years spent in Egypt include the lifetime of their forefather, who was instructed to leave Haran. The Scriptures indicate he was seventy-five years old at that time. If one calculates the time from then until the Exodus, they will indeed arrive at the full span of four hundred years.

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Moreover, it can be said that the Lord, in His mercy and awareness of our frailties, acted to relieve them as soon as He perceived their exhaustion from labor and the severe oppression inflicted by the Egyptians. He rendered judgment at that moment and guided them toward liberation. This is characteristic of His nature: while He designs our salvation and warns of consequences, He rescinds His judgment if we turn back to Him. Conversely, though He assures us of blessings, if we fail to do our part, He does not fulfill His promises lest our situation worsen.

All of this is evident if one reads the Holy Scriptures earnestly. 'In the fourth generation they shall return here: for the measure of the iniquities of the Amorites is not yet filled.' Here, the timing is indicated not just for the deliverance of Abraham's descendants but also for the condemnation and expulsion of the Amorites due to their extensive sins. Thus, the restoration of some and the destruction of others will occur at the appointed time. The Lord states that the 'measure of their iniquities' has not yet reached its fullness, meaning their offenses have not yet warranted severe punishment. In His mercy, the Lord refrains from exacting punishments beyond our sins and often sends lesser ones. Therefore, He displays remarkable patience toward the Amorites, giving them opportunity to recognize their culpability before facing the consequences of their actions.

Consider how the Lord meticulously communicated His plans to the forefather, aiming to fortify his faith in every respect and assure him that all that had been foretold concerning him and his descendants would indeed come to pass.

Ephraem the Syrian

4th centuryChurch Father

The statement, “The sins of the Ammoraeans are not fulfilled until now,” indicates that the extent of their transgressions, which would ultimately lead to their rightful destruction by the sword, has not yet reached its culmination.

Jerome of Stridon

4th centuryChurch Father

The passage refers to those descended from Abraham who will return. One might wonder how Exodus states, "And in the fifth generation the children of Israel came out of the land of Egypt" (Exodus 13:18 in the LXX). I have written a brief treatise addressing this issue.

Ambrose of Milan

4th centuryChurch Father

The narrative of the Jewish people’s sojourn in and exodus from Egypt seems to support this perspective. They resided in Egypt for four hundred thirty years, yet not everyone reached the age of one hundred or more, like Moses and Joshua, to align with the timeframe of the fourth generation. Therefore, we should seek a deeper significance. Truly, the number ‘four’ integrates with all other numbers, serving as a foundation for ‘ten’ and acting as the midpoint of ‘seven.’ Furthermore, the ninety-third psalm is marked by the fourth day of the week, as this number stands between the initial and subsequent days, with three days prior: the first, second, and third, and three days following: the fifth, sixth, and seventh.

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The one who chants this psalm orders the existence of this world in harmony with these meaningful numbers, creating a form akin to a solid and complete quadrilateral. In the four gospels, the message is whole and perfect. There are four enigmatic creatures. The four corners of the earth represent the faithful gathered from all directions to establish the sacred kingdom of Christ, emerging from the east and west, north and south, thus the holy Church is raised on all four sides. Moreover, ‘ten’ emerges from this number as well; when summing the integers from one to four, you arrive at ten. Start with one, add two: reaching three; take three and add three: arriving at six; to six, include four: culminating in ten. Consequently, ‘four’ completes ten, and ten encompasses all quantities. ‘Four’ also symbolizes the stages of human life: childhood, youth, adolescence, and maturity. The growth and strengthening of wisdom eventually reach their fullness in this fourth stage of life. In terms of justice, even if a person once lived under the reign of the Egyptian monarch, upon attaining maturity, they are liberated from that dominion and come to understand the necessity of adhering to the Law. Thus, navigating the sea of this existence becomes more manageable for them.

Philaret of Moscow (Drosdow)

19th centuryChurch Father

In the fourth generation, they will return to this location. This can be interpreted as the span of a human lifetime or a significant period in which the present state of a community transforms entirely. The ancients referred to a century as a kind, marking the interval from a father’s birth to that of his son. For instance, Egyptians perceived this kind as lasting 33 years; one name within the genealogy without specifying the duration. This nomenclature is recognized in the first chapter of Matthew's Gospel. In this context, the fourth genealogy concerning the return of the Israelites starts from their entrance into Egypt, exemplified by figures such as Kaath, Abram, Aaron, and Eleazar. Until now, the measure of the iniquity of the Amorites remains unfulfilled.

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God has intertwined the blessings bestowed upon the Israelites with the judgment upon the Amorites, or Canaanites more broadly; thus, the season of trial required for the former aligns with the period of forbearance intended for the latter. But what constitutes the completion of the measure of iniquity for any nation? Abram attempted to quantify this by considering the gradual decrease of the righteous in comparison to the wicked, yet the inquiries he made to the Lord did not yield a definitive answer (Gen. 18:32, 33). To grasp this concept, we can liken sinfulness to sickness—a comparison often found in Scripture. As long as the vitality of life within the body outweighs the forces of death and decay, sickness can persist without leading to death. Likewise, in a society, while the seeds of spiritual and moral vitality counteract the spread of evil and corruption, its sinful condition does not reach the point of death, and God’s patience remains. However, when the destructive influences of wickedness gain overwhelming dominance, particularly among those who steer others, it leads to an incessant, rapid, and unstoppable increase in iniquity; ultimately, a descent into profound wrongdoing, apathy, or utter disregard for divine actions, resulting in the blockage of life-giving grace. This culminates in the total destruction of a community or nation, akin to a body devoid of a soul or a tree lacking life-sustaining sap. The stages can be categorized as the filling up of iniquity, abandonment by God, and final judgment or punishment from God.

Didymus the Blind

4th centuryTeacher of the Church

Following the previous reflections on Abram, God now addresses the future generations who will spring from him, revealing that they will eventually return to this land in the fourth generation. This return is tied to a period of four hundred years, which indicates that the iniquity of the Amorites has not yet reached its ultimate measure. Their eventual demise will clear the way for Abram’s descendants, who will then occupy their territory. God administers justice in His own measure and timeframe, demonstrating patience until the moment for judgment arrives. A comparable instructive episode is found in the Gospel, wherein Jesus reproaches the cities that witnessed His might yet failed to repent: "Woe to you, Chorazin! Woe to you, Bethsaida!

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For if the mighty works which were done in you had been done in Tyre and Sidon, they would have repented long ago in sackcloth and ashes." One might question why such miracles were not performed in those cities that could have shown true repentance, especially when they were instead displayed in locations where no conversion took place. The answer may lie in the understanding that the Son of God, being the embodiment of Wisdom, is aware of the heart's intentions. He knew that the residents of Tyre and Sidon would not genuinely repent; thus, His miracles were not manifested there. It could be suggested that it is better for those who remain oblivious to the truth than to know it and subsequently turn away. Consequently, Christ refrained from working wonders in Tyre and Sidon, knowing that any repentance there would be superficial. Conversely, those cities that did experience His miracles revealed no signs of true contrition, prompting Him to act so that they could not claim justification, and preventing them from suffering further detriment from premature honor. Moreover, consider whether the Savior used this rhetorical emphasis to underscore the shame of those who witnessed signs yet did not repent, for such a method of teaching is not uncommon. The perfect patience and goodness of the Judge are unmistakable, as illustrated by His waiting for the Amorites’ sins to reach their fullness. Ultimately, God enforces punishment only after providing correction and encouragement leading to repentance. This was exemplified in Pharaoh’s case: after numerous warnings and opportunities for mercy, his obstinate heart led to his own ruin.

Vissarion (Nechaev)

19th centuryCommentator

It is expressed regarding the descendants of Abram that “in the fourth generation shall these return.” Some interpret this as a reference to the four hundred years indicated in verse 13, viewing each century as a distinct ‘generation.’ Others connect this statement to the period of the Israelites’ stay in Egypt, counting the generations from Levi to Caath, from Caath to Amram, from Amram to Aaron, and from Aaron to Eleazar. Some perceive a parallel to this sequence of generations in the choice of the ‘three-year-old’ heifer, goat, and ram for the covenant ceremony; just as these animals suitable for the rite were selected from the ‘fourth’ year, so the Israelites would exit Egypt in the fourth generation. An example of this pattern can be found in the book of Judges, where Gideon, chosen to liberate the Israelites from the seven-year domination of Midian, had to offer a “seven-year-old” calf (Judges 6:1-25).

Cross references

Passages read together with this verse.