Passage

Genesis 15

Verses 1–6 WEB Voices

After Abram’s rescue of Lot and his refusal of Sodom’s spoils, the word of the LORD comes in a vision: fear not, I am your shield. Childless Abram names Eliezer; God promises a son from his own body and offspring like the stars. Abram believes the LORD, and it is counted to him as righteousness—the verse Paul will make the Bible’s great proof of justification by faith.

Genesis 15:1

1After these things the LORD’s word came to Abram in a vision, saying, “Don’t be afraid, Abram. I am your shield, your exceedingly great reward.”

Arminian

After war and the refused spoils, the LORD comes in a vision: Fear not. Shield and reward are God’s own self offered to a man who has just turned down a king’s goods.

Classical Arminians hear a word of comfort. Grace addresses Abram’s fear and invites trust. The reward is not Sodom’s treasure; it is the LORD Himself, sincerely pledged to the one who will believe.

Reformed

“After these things” ties the vision to Melchizedek’s blessing and Abram’s refusal of Sodom. The word of the LORD comes first: I am your shield.

God is the reward, not merely the giver of one. The initiative is His speech in a vision. Fear is answered by covenant identity before Abram names his childlessness.

Genesis 15:2

2Abram said, “Lord GOD, what will you give me, since I go childless, and he who will inherit my estate is Eliezer of Damascus?”

Arminian

Abram answers the promise with a wound: childless still, and Eliezer stands as heir. Honest prayer names the gap between word and household.

Application: faith can question without quitting. Grace has made Abram a conversation partner; he brings the empty tent to God rather than inventing a private solution.

Reformed

“Lord GOD” is worship even in complaint. The heir-of-the-house problem is laid before the Giver, not before Canaan’s gods.

Providence has allowed the wait. The lament is no illusion, and it sits inside a relationship God began. Eliezer’s name proves Abram has been counting—and still speaking to the LORD.

Genesis 15:3

3Abram said, “Behold, you have given no children to me: and, behold, one born in my house is my heir.”

Arminian

He repeats the ache: You have given me no offspring. The household servant will inherit unless God acts. Abram locates the lack in God’s giving, not in fate.

Arminians honor this as responsible prayer. The promise of chapter 12 has not yet become a child; faith waits and asks, rather than resigning to Eliezer as if the word had failed.

Reformed

“You have given no children to me” is theology as well as grief. Offspring is gift; its absence is also under God’s hand.

The heir-from-the-house is Abram’s reasonable plan B. The next word will close that door. God will not let household custom rewrite the promise.

Genesis 15:4

4Behold, the LORD’s word came to him, saying, “This man will not be your heir, but he who will come out of your own body will be your heir.”

Arminian

Behold: the word returns. Eliezer shall not inherit; a son from Abram’s own body will. God answers the named fear with a sharper promise.

The LORD does not shame the questioner. He clarifies. Grace keeps speaking so that faith has something specific to receive.

Reformed

The word of the LORD overrules the household will. “This man will not” is as sovereign as “your own body will.”

God writes the heir. Promise is not Abram’s inference from present staff; it is God’s decree about a son not yet conceived.

Genesis 15:5

5The LORD brought him outside, and said, “Look now toward the sky, and count the stars, if you are able to count them.” He said to Abram, “So your offspring will be.”

Arminian

Abram is taken outside: look, number, if you can. Stars become a sacrament of offspring. The promise is now as wide as the night sky.

Arminian readers see a God who stoops to help weak faith see. The sign invites trust; Abram must look and receive. The innumerable host is sincerely pledged.

Reformed

Heaven is God’s visual aid. What Abram cannot count, God can create. “So your offspring will be” is fiat promise under a created sky.

The God who numbered the stars now numbers a people from a childless man. The sign is as sure as the Creator’s mouth.

Genesis 15:6

6He believed in the LORD, who credited it to him for righteousness.

Arminian

The hinge of Scripture: Abram believed the LORD, and God counted it as righteousness. Paul will read this as justification apart from works (Rom 4; Gal 3). Faith here is trust in the Promiser, not a wage Abram earned.

Arminian readers stress a believing that God graciously reckons. Faith is the gospel’s condition, enabled by grace, not a meritorious work. Wesley’s note is pastoral: if Abram, rich in later works, was not justified by them but by faith, much less can we be. Arminius keeps Christ’s obedience as the only meritorious cause, yet will not let go of Paul’s phrase: to the believer, faith is imputed for righteousness through grace.

Reformed

Moses names faith, then imputation. Abram is received as righteous in God’s courtroom, not certified as already virtuous. Calvin hears Paul already in the verse: righteousness obtained by imputation because the promise was embraced.

Reformed confession presses the distinction Westminster draws: God does not impute faith itself, the act of believing, as the righteousness that satisfies; He imputes Christ’s obedience and satisfaction, received by faith as gift. Genesis 15:6 is the Old Testament unveiling of that gospel—counted righteous because God counts, not because Abram has become his own righteousness.

Key contrast Both preach justification by faith from this verse, not by Abram’s works. Arminians typically say faith is graciously counted as righteousness (Christ remaining the meritorious cause); Calvin’s heirs generally say Christ’s righteousness is imputed, and faith is the Spirit-given instrument—not itself the righteousness imputed.

Historic quotes

Voices from both camps

Historic words on Genesis 15:6, faith, and imputation—so each camp speaks in its own voice on the verse Paul cites as justification’s pattern.

Arminian Notable voices

“And he believed in the Lord — that is, believed the truth of that promise which God had now made him, resting upon the power, and faithfulness of him that made it… And he counted it to him for righteousness — that is, upon the score of this he was accepted of God… This is urged in the New Testament to prove, that we are justified by faith without the works of the law… If Abram, that was so rich in good works, was not justified by them, but by his faith, much less can we.”
John Wesley · Explanatory Notes upon the Old Testament (on Gen 15:6)
“I believe that sinners are accounted righteous solely by the obedience of Christ; and that the righteousness of Christ is the only meritorious cause on account of which God pardons the sins of believers and reckons them as righteous as if they had perfectly fulfilled the law. But since God imputes the righteousness of Christ to none except believers, I conclude that, in this sense, it may be well and properly said, to a man who believes, faith is imputed for righteousness through grace.”
Jacobus Arminius · Declaration of Sentiments, “The Justification of Man before God”

Reformed Notable voices

“The words of Moses are, “He believed in the Lord, and he counted it to him for righteousness.” In the first place, the faith of Abram is commended, because by it he embraced the promise of God; it is commended, in the second place, because hence Abram obtained righteousness in the sight of God, and that by imputation… wherefore Abram was received into the number and rank of just persons by the imputation of righteousness.”
John Calvin · Commentary on Genesis (on Gen 15:6)
“Those whom God effectually calleth, He also freely justifieth: not by infusing righteousness into them, but by pardoning their sins, and by accounting and accepting their persons as righteous… not by imputing faith itself, the act of believing, or any other evangelical obedience to them, as their righteousness; but by imputing the obedience and satisfaction of Christ unto them, they receiving and resting on Him and His righteousness by faith; which faith they have not of themselves, it is the gift of God.”
Westminster Confession of Faith · 11.1 (1647)

Quotations lightly abridged for length; wording follows standard English translations of the sources named.

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