Romans 2:19

“And art confident that thou thyself, etc..] 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…”

“And art confident - This expression denotes the full assurance of the Jew that he was superior in knowledge to all other people. It is a remarkable fact that the Jews put the fullest confidence in their religion. Though proud, wicked, and hypocritical, yet they were not speculative infidels. It was one of their characteristics, evinced through all their history, that they had the fullest assurance that God was the author of their institutions, and that their religion was his appointment. A guide of the blind - A guide of the blind is a figurative expression to denote an instructor of the ignorant. The blind here properly refers to the Gentiles, who were thus regarded by the Jews. The meaning…”

“Blind, in darkness, ignorant, babes - These were the titles which the Jews generally gave the gentiles. Romans 2:20”

“art confident: Pro 26:12; Isa 5:21, Isa 56:10; Mat 6:23, Mat 15:14, Mat 23:16-26; Mar 10:15; Joh 7:46-49, Joh 9:34, Joh 9:40, Joh 9:41; Co1 3:18, Co1 4:10, Co1 8:1, Co1 8:2; Rev 3:17, Rev 3:18 a light: Isa 49:6, Isa 49:9, Isa 49:10; Mat 4:16, Mat 5:14; Luk 1:79; Act 26:18; Phi 2:15 Romans 2:20”