Contradiction with Proverbs 28:9
This verse suggests that if one turns away from hearing the law, even their prayer is an abomination, contradicting the idea of confidently waiting for the Lord to answer as in Psalms 38:15.
Proverbs 28:9: He that turneth away his ear from hearing the law, even his prayer [shall be] abomination.
Contradiction with Isaiah 1:15
This verse states when you spread out your hands, God will hide His eyes and not hear, which contradicts the psalmist's belief that God will hear and respond.
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 7:21
This verse implies that not everyone who calls on the Lord will enter the kingdom of heaven, contradicting the assurance seen in Psalms 38:15.
Matthew 7:21: Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Contradiction with James 4:3
This verse explains that one may ask and not receive because they ask with wrong motives, contrasting with the psalmist's confidence that the Lord will hear and respond.
James 4:3: Ye ask, and receive not, because ye ask amiss, that ye may consume [it] upon your lusts. [lusts: or, pleasures]