Contradiction with James 1:8
A double minded man is described here, contrasting the steadfast and fixed heart in Psalms 57:7.
James 1:8: A double minded man [is] unstable in all his ways.
Contradiction with Matthew 6:24
Explains the impossibility of serving two masters, contrasting the undivided heart in Psalms 57:7.
Matthew 6:24: No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon.
Contradiction with Isaiah 29:13
Describes those who honor God with their lips, while their hearts are far from Him, contradicting the wholehearted devotion in Psalms 57:7.
Isaiah 29:13: Wherefore the Lord said, Forasmuch as this people draw near [me] with their mouth, and with their lips do honour me, but have removed their heart far from me, and their fear toward me is taught by the precept of men:
Contradiction with Proverbs 21:2
Speaks of man's way being right in his own eyes, which can contrast the fixed heart in trusting God's ways in Psalms 57:7.
Proverbs 21:2: Every way of a man [is] right in his own eyes: but the LORD pondereth the hearts.
Contradiction with Jeremiah 17:9
Describes the heart as deceitful above all, contradicting the steadfastness and sincerity expressed in Psalms 57:7.
Jeremiah 17:9: The heart [is] deceitful above all [things], and desperately wicked: who can know it?
Contradiction with Hosea 10:2
Talks about a divided heart, contrasting the undivided heart mentioned in Psalms 57:7.
Hosea 10:2: Their heart is divided; now shall they be found faulty: he shall break down their altars, he shall spoil their images. [Their heart...: or, He hath divided their heart] [break...: Heb. behead] [images: Heb. statues, or, standing images]