There shall no razor come upon his head. The meaning of this law is best understood from the case of Samson, whose strength was in his hair, and departed from him when his hair was cut. No doubt that strength was a more or less supernatural gift, and it went and came with his hair according to some supernatural law; but it is clear that the connection was not merely arbitrary, but was founded on some generally received idea.
To the Jew, differing in this from the shaven Egyptian and the short-haired Greek, the hair represented the virile powers of the adult, growing with its growth, and failing again with its decay. To use a simple analogy from nature, the uncropped locks of the Nazirite were like the mane of the male lion, a symbol of the fullness of his proper strength and life (cf.
2 Samuel 14:25, 2 Samuel 14:26, and, for the disgrace of baldness, 2 Kings 2:23). In later ages Western and Greek feeling on the subject prevailed over Eastern and Jewish, and a "Hebrew of the Hebrews" was able to argue that "even nature itself" teaches us "that if a man have long hair it is a shame unto him" (1 Corinthians 11:14).
No doubt "nature itself" taught the Greek of Corinth that lesson; but no doubt also "nature itself" taught the Jew of Palestine exactly the opposite lesson; and the Apostle himself did not quite discard the earlier sentiment, for he too made a Nazirite vow, and suffered his hair to grow while it lasted (Acts 21:24).
The meaning, therefore, of the law was that the whole fullness of the man's vitality was to be dedicated without any diminution to the Lord, as typified by the free growth of his hair. It has been conjectured that it was allowed to the Nazirite to "poll" ( κείρασθαι) his hair during his vow, although not to "shave" it ( ξυρᾶσθαι); and in this way the statement is explained that St.
Paul "polled his head" ( κειράμενος τὴν κεφαλὴν, Acts 18:18, compared with Acts 21:24) in Cenchraea, because he had a vow. It is, however, quite evident that any permission to cut the hair is inconsistent with the whole intention of the commandment; for if a man might "poll his head" when he pleased, he would not be distinguished from other men.
If it was allowed in the Apostle's time, it is only another instance of the way in Which the commandments of God were made of none effect by the traditions of men.