Commentary on the Epistle to the Galatians

by Martin Luther

Ishmael and Isaac were both the natural children of Abraham. By rights Ishmael should have enjoyed the prerogatives of the firstborn, if physical generation had any special value. Nevertheless he was left out in the cold while Isaac was called. This goes to prove that the children of faith are the real children of Abraham.

Some find fault with Paul for applying the term "faith" in Genesis 15:6 to Christ. They think Paul's use of the term too wide and general. They think its meaning should be restricted to the context. They claim Abraham's faith had no more in it than a belief in the promise of God that he should have seed.

We reply: Faith presupposes the assurance of God's mercy. This assurance takes in the confidence that our sins are forgiven for Christ's sake. Never will the conscience trust in God unless it can be sure of God's mercy and promises in Christ. Now all the promises of God lead back to the first promise concerning Christ: "And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel." The faith of the fathers in the Old Testament era, and our faith in the New Testament are one and the same faith in Christ Jesus, although times and conditions may differ. Peter acknowledged this in the words: "Which neither our fathers nor we were able to bear? But we believe that through the grace of the Lord Jesus Christ we shall be saved, even as they." (Acts l5: 10, 11.) And Paul writes: "And did all drink the spiritual drink; for they drank of that spiritual Rock that followed them: and that Rock was Christ." (I Cor. 10:4.) And Christ Himself declared: "Your father Abraham rejoiced to see my day: and he saw it and was glad." (John 8:56.) The faith of the fathers was directed at the Christ who was to come, while ours rests in the Christ who has come. Time does not change the object of true faith, or the Holy Spirit. There has always been and always will be one mind, one impression, one faith concerning Christ among true believers whether they live in times past, now, or in times to come. We too believe in the Christ to come as the fathers did in the Old Testament, for we look for Christ to come again on the last day to judge the quick and the dead.

VERSE 7. Know ye therefore that they which are of faith, the same are the children of Abraham.

Paul is saying: "You know from the example of Abraham and from the plain testimony of the Scriptures that they are the children of Abraham, who have faith in Christ, regardless of their nationality, regardless of the Law, regardless of works, regardless of their parentage. The promise was made unto Abraham, 'Thou shalt be a father of many nations'; again, 'And in thee shall all families of the earth be blessed.'" To prevent the Jews from misinterpreting the word "nations," the Scriptures are careful to say "many nations." The true children of Abraham are the believers in Christ from all nations.

VERSE 8. And the Scripture, foreseeing that God would justify the heathen through faith.

"Your boasting does not get you anywhere," says Paul to the Galatians, "because the Sacred Scriptures foresaw and foretold long before the Law was ever given, that the heathen should be justified by the blessed 'seed' of Abraham and not by the Law. This promise was made four hundred and thirty years before the Law was given. Because the Law was given so many years after Abraham, it could not abolish the promised blessing." This argument is strong because it is based on the exact factor of time. "Why should you boast of the Law, my Galatians, when the Law came four hundred and thirty years after the promise?"

The false apostles glorified the Law and despised the promise made unto Abraham, although it antedated the Law by many years. It was after Abraham was accounted righteous because of his faith that the Scriptures first make mention of circumcision. "The Scriptures," says Paul, "meant to forestall your infatuation for the righteousness of the Law by installing the righteousness of faith before circumcision and the Law ever were ordained."

VERSE 8. Preached before the gospel unto Abraham, saying, In thee shall all nations be blessed.

The Jews misconstrue this passage. They want the term "to bless" to mean "to praise." They want the passage to read: In thee shall all the nations of the earth be praised. But this is a perversion of the words of Holy Writ. With the words "Abraham believed" Paul describes a spiritual Abraham, renewed by faith and regenerated by the Holy Ghost, that he should be the spiritual father of many nations. In that way all the Gentiles could be given to him for an inheritance.