От Луки 11:44

appear not, &c.--As one might unconsciously walk over a grave concealed from view, and thus contract ceremonial defilement, so the plausible exterior of the Pharisees kept people from perceiving the pollution they contracted from coming in contact with such corrupt characters. (See Psa 5:9; Rom 3:13; a different illustration from Mat 23:27).

In this chapter, I. Christ teaches his disciples to pray, and quickens and encourages them to be frequent, instant, and importunate in prayer (Luk 11:1-13). II. He fully answers the blasphemous imputation of the Pharisees, who charged him with casting out devils by virtue of a compact and confederacy with Beelzebub, the prince of the devils, and shows the absurdity and wickedness of it (Luk 11:14-26). III. He shows the honour of obedient disciples to be greater than that of his own mother (Luk 11:27, Luk 11:28). IV. He upbraids the men of that generation for their infidelity and obstinacy, notwithstanding all the means of conviction offered to them (Luk 11:29-36). V. He severely reproves the Pharisees and consciences of those that submitted to them, and their hating and persecuting those that witnessed against their wickedness (v. 37-54).

11:44 hidden graves in a field: Touching a grave or a dead body rendered a Jew ceremonially unclean. Jesus accused the religious leaders of being a defiling influence rather than a purifying one. This was a strongly offensive accusation (11:45).