Adam Clarke on Matthew 23:14

Ye devour widows' houses - On this subject I am in possession of nothing better than the following note of Dr. Whitby. "This sect," says Josephus, (Ant. l. xvii. chap. 3), "pretended to a more exact knowledge of the law, on which account the women were subject to them, as pretending to be dear to God. And when Alexandra obtained the government, (Jewish War, b. I. ch. 4), they insinuated themselves into her favor, as being the exactest sect of the Jews, and the most exact interpreters of the law, and, abusing her simplicity, did as they listed, remove and dispose, bind and loose, and even cut off men. They were in vogue for their long prayers, which they continued sometimes three hours; that perhaps they sold them, as do the Roman priests their masses, or pretended others should be more acceptable to God for them; and so might spoil devout widows by the gifts or salaries they expected from them.

Now this being only a hypocritical pretense of piety, must be hateful to God, and so deserve a greater condemnation."

Long prayer - For proofs of long prayers and vain repetitions among Jews, Mohammedans, and heathens, see the notes on Mat 6:7.