Contradiction with Proverbs 28:9
This verse states that one who turns away his ear from hearing the law, even his prayer shall be an abomination, implying that without obedience, continuous prayer may be considered detestable.
Proverbs 28:9: He that turneth away his ear from hearing the law, even his prayer [shall be] abomination.
Contradiction with Isaiah 1:15
Here, God mentions that when people spread out their hands in prayer, He will hide His eyes, and even if they multiply prayers, He will not listen because their hands are full of blood, suggesting a rejection of numerous prayers if one is guilty of wrongdoing.
Isaiah 1:15: And when ye spread forth your hands, I will hide mine eyes from you: yea, when ye make many prayers, I will not hear: your hands are full of blood. [make...: Heb. multiply prayer] [blood: Heb. bloods]
Contradiction with Matthew 6:7
This verse advises against vain repetitions in prayer, suggesting that continuous calling upon the Lord, as in Psalms 86:3, might become vain or empty if done without sincerity.
Matthew 6:7: But when ye pray, use not vain repetitions, as the heathen [do]: for they think that they shall be heard for their much speaking.