Contradiction with Hebrews 8:13
This verse speaks of the old covenant being made obsolete, which contradicts Psalms 105:8's affirmation of God's everlasting covenant.
Hebrews 8:13: In that he saith, A new [covenant], he hath made the first old. Now that which decayeth and waxeth old [is] ready to vanish away.
Contradiction with Galatians 3:19
It mentions the law, or covenant, was added because of transgressions until Jesus came, suggesting a temporary covenant, differing from Psalms 105:8's "forever."
Galatians 3:19: Wherefore then [serveth] the law? It was added because of transgressions, till the seed should come to whom the promise was made; [and it was] ordained by angels in the hand of a mediator.
Contradiction with Jeremiah 31:31-32
Speaks of a new covenant, implying the old one is replaced, contradicting the everlasting covenant mentioned in Psalms 105:8.
Jeremiah 31:31-32: Behold, the days come, saith the LORD, that I will make a new covenant with the house of Israel, and with the house of Judah:
Contradiction with 2 Corinthians 3:14
Refers to the old covenant as abolished in Christ, conflicting with the eternal nature of the covenant in Psalms 105:8.
2 Corinthians 3:14: But their minds were blinded: for until this day remaineth the same vail untaken away in the reading of the old testament; which [vail] is done away in Christ.
Contradiction with Hebrews 7:18
Describes a former commandment set aside due to its weakness, suggesting change rather than Psalms 105:8's permanence.
Hebrews 7:18: For there is verily a disannulling of the commandment going before for the weakness and unprofitableness thereof.