(19) A guide of the blind.--Comp. Matthew 15:14, "They be blind leaders of the blind. And if the blind lead the blind," et seq.

Verses 19, 20. - And art confident that thou thyself art a guide of the blind, a light of them which are in darkness, an instructor of the foolish, a teacher of babes, having the form of knowledge and of the truth in the Law. Here the form (μόρφωσις) does not mean the mere outward show, but the real representation in concrete form of knowledge and truth. The Jew had that; and the Law itself is by no means disparaged because the Jew presumed on it without keeping it (cf. Romans 7:12).

2:17-24 The apostle directs his discourse to the Jews, and shows of what sins they were guilty, notwithstanding their profession and vain pretensions. A believing, humble, thankful glorying in God, is the root and sum of all religion. But proud, vain-glorious boasting in God, and in the outward profession of his name, is the root and sum of all hypocrisy. Spiritual pride is the most dangerous of all kinds of pride. A great evil of the sins professors is, the dishonour done to God and religion, by their not living according to their profession. Many despise their more ignorant neighbours who rest in a dead form of godliness; yet themselves trust in a form of knowledge, equally void of life and power, while some glory in the gospel, whose unholy lives dishonour God, and cause his name to be blasphemed.And art confident that thou thyself,.... Being vainly puffed up in, their fleshly minds, they were strongly persuaded that they were very fit persons to be

a guide to the blind: all men are by nature blind, as to the knowledge of divine and spiritual things; the meaner sort of the people among the Jews seem to be intended here; or else the ignorant Gentiles, whom the Jews were very fond of making proselytes to their religion and laws; but miserable guides were they, whether to their own people, or others; blind guides of the blind. Gospel ministers best deserve this title:

a light of them that are in darkness; so Christ, John the Baptist, the disciples of Christ, and all Gospel ministers are; but these men, who arrogated such characters to themselves, were dim lights, and dark lanterns. The apostle seems to have respect to those very high and exalted characters the Jews give of their doctors, as when they call one, , "the lamp of light" (w); another, "the holy lamps" (x); and a third, , "the lamp of Israel" (y); with many others of the same kind; See Gill on Matthew 5:14 and See Gill on John 5:35.

(w) T. Bab. Cetubot, fol. 17. 1.((x) Zohar passim. (y) T. Bab. Beracot, fol. 28. 2.