What is legalism? Legalism does not mean just having rules or laws; it is a misuse of rules and laws. Theologically, legalism is a distortion of the law of God, a misunderstanding of the law given by God to Israel. The law of God is not legalism. It was a covenant relationship between God and the people Israel. But unlike the covenants God made with Noah and with Abraham, which were covenants of sheer grace, with no conditions attached to the receiving of the blessings of the covenant, the Mosaic covenant was conditional. God made unconditional promises to Noah and to Abraham of what He would do. But the blessings of the Mosaic covenant were conditioned upon Israel's obedience to God (Deut. 28:1-14); their disobedience to Him would bring curses upon them (Deut. 28:15-20; 30:1-20). These conditions are given in the Ten Commandments (Ex. 20:3-17; Deut. 5:6-21) and other statutes and ordinances. These commandments were not an end in themselves; they were specific ways in which they were to obey God. The law is concerned with Israel's personal relationship to God: to love and obey God and not to worship or serve other gods. The history of Israel shows that they did not obey God. They disobeyed Him by turning from Him to other gods. From the time of Moses through the times of the judges and kings, they kept backsliding into idolatry. The prophets over and over again rebuked them for the sin of idolatry. The curses that God said He would bring upon them for their disobedience and idolatry (Deut. 28:36-52, 63-66; 29:24-28) came upon them; they were scattered among the nations: the northern tribes in 722 B.C. by Assyria and the southern tribes in 586 B.C. by Babylonia. When they returned from the 70 years of Babylonian captivity, the Jews never again went into the idolatry of worshipping pagan gods. But it seems that very soon after the last of the O.T. prophets, Malachi, they developed an idolatry of the law. They began to trust in the law (Rom. 2:17). The law became an absolute standard to be obeyed. Obedience to the law subtly took the place of obedience to God. Keeping the law became a meritorious work that could earn God's favor and blessings. Eventually there evolved the idea that one's eternal destiny depends upon the amount of merit or demerit that one accumulates during one's life-time. This whole scheme of merit with its absolute standard of the law is what we mean by legalism.
Jesus and the early apostles, particularly Paul, opposed this Jewish legalism. Paul combated the Judaizers' attempts to put Christians under the Mosaic law. When we realize the covenant nature of the law, we can see why this was not possible. Since the Christian's relationship to God was already established in the New covenant, it could not at the same time be established under the Old Mosaic covenant. Then it must be that what the Judaizers were trying to do was to make the law in an absolute sense necessary for a right relationship to God. This is not just the Mosaic law; it is legalism. And Paul refused to allow it.
Even though Paul's opposition to the Judaizers in the early church effectively stopped the entrance into Christianity of the Jewish legalism (see the Letter to the Galatians), this did not stop another form of the legalism from creeping into Christian thought and practice some 200 years later. In this later form of legalism, the rationalism of the Greek philosophers were wedded to the legal philosophy of the Romans by such early writers as Cicero (1st century B.C.). This rationalistic legalism crept into Christian theology by way of a 3rd century lawyer and Christian apologist, Tertullian, and since the time of Augustine (5th century) it has formed the basis of most Roman Catholic and Protestant theology.
Legalism in its fullest form consists of four distortions of the law.
These are the essential characteristics of legalism.
This misunderstanding of God in terms of the law leads not only to a misunderstanding of the relationship of God to man but also of the relationship of man to God. Sin is defined in terms of the law and not in terms of God; sin is understood only as a falling short of the divine standard of the law, the breaking of the law or rules, the transgression of or want of conformity to the law in thought, word and deed. Sin is a crime and the penalty for these crimes is spiritual, physical and eternal death. Until the penalty is executed at the last judgement, man is under the burden of an objective guilt or condemnation which must be satisfied by the execution of the penalty. This objective guilt has been conceived in terms of a debt which man owes and/or as a demerit on man's record.
Righteousness, correspondingly, is also misunderstood to be keeping of the law or rules, a conformity to the law in thought, word, and deed; legal and moral perfection. Man's highest good and final goal according this point of view is this moral perfection, this legal righteousness. To stand spotless and without legal blame before the law is thought to be man's ultimate hope. Man is misunderstood as being created under the law and for the law; he is a moral, rational animal. Accordingly, man is different from the lower animals and like God because he possesses a moral and rational nature like God does. There is within man's conscience an absolute standard of right and wrong -- the law of nature, a universal moral law. This misunderstanding of man in terms of the law follows from the misunderstanding of God in terms of the law. As a result, the relationship between God and man is depersonalized. The depersonalization of the law thus necessarily follows from the absolutizing of the law.
The Apostle Paul in opposing salvation by works refers to such meritorious works as "the righteousness of the law" (Rom. 10:5; Phil. 3:6,9) and "the works of the law" (Rom. 3:20; 4:2-5; Gal. 3:2,5,10). In his language a "work of law" is usually more than just a good deed or act; it is a meritorious good deed or act. The law is thus considered to be the standard by which the merits of good works can be determined. For James, on the other hand, a "work" is just a good deed or act (James 2:14-26). Since the Apostle Paul is talking about something different from James, they do not contradict each other.
Legalism in absolutizing the law has distorted the meaning and misunderstands the place of the law in God's dealings with man. The law in its proper place in God's dealings with man must be carefully distinguished from the distortion of the law that results from the legalistic absolutizing of the law. The failure to make this distinction between the proper understanding of the law and the legalistic misunderstanding of the law has led to much confusion in the discussion about the relationship of the law to the gospel. The distinction between the law and the gospel is not the same as the distinction between legalism and the gospel. The distinction between the law and the gospel is the distinction between the old Mosaic covenant and the new covenant. Whereas the distinction between legalism and the gospel is the distinction between salvation by meritorious works and salvation by grace though faith. The law as the old Mosaic covenant is not legalism and does not contain any of the legalistic distortions and abuses of law discussed above. These were introduced later by the Pharisees, etc. Legalism has taken some elements of the Mosaic covenant of the law and has exaggerated them, distorting them into something that God did not intend or reveal. The apparent truth of legalism stems from these elements of the Mosaic covenant that legalism has distorted.
There are two of these elements in particular that legalism has distorted which need to be especially noted here.
[1] "I find that it has been the opinion of the wisest men
that Law is not a product of human thought, nor is it any
enactment of peoples, but something eternal which rules the
whole universe by its wisdom in command and prohibition.
Thus they have been accustomed to say that Law is the primal
and ultimate mind of God, whose reason directs all things
either by compulsion or restraint.... it is the reason and
mind of the wise lawgiver applied to command and
prohibition.... Ever since we were children, Quintus, we have
learned to call, 'If one summon another to court,' and other
rules of the same kind, laws. But we must come to the true
understanding of the matter, which is as follows: this and
other commands and prohibitions of nations have the power to
summon to righteousness and away from wrongdoing; but this
power is not merely older than the existence of the nations
and states, it is coeval with that God who guards and rules
heaven and earth. For the divine mind cannot exist without
reason, and divine reason cannot but have this power to
establish right and wrong.... For reason did not exist,
derived from the Nature of the universe, urging men to right
conduct and diverting them from wrongdoing, and this reason
did not first become Law when it was written down, but when
it first came into existence; and it came into existence
simultaneously with the divine mind. Wherefore, the true
and primal Law, applied to command and prohibition, is the
right reason of supreme Jupiter."
Cicero, Laws, II, 8-10,
Cicero, De Re Publica, De Legibus
Eng. trans. Clinton Walker Keyes, in The Loeb Classical Library
(Cambridge, Mass.: Harvard Univ. Press, 1961), pp. 379-383.