Contradiction with Hebrews 8:13
This verse indicates the old covenant is obsolete, which contradicts Psalms 105:9 that speaks of the everlasting covenant made with Abraham.
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 3:17
This verse suggests that the law given 430 years later does not change the covenant earlier confirmed by God, which questions the continuity of the covenant mentioned in Psalms 105:9.
Galatians 3:17: And this I say, [that] the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect.
Contradiction with Jeremiah 31:31-32
It anticipates a new covenant, suggesting a departure from the covenant referenced in Psalms 105:9 with the patriarchs.
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 Romans 9:6-8
This passage states not all descendants of Israel are part of the promise, while Psalms 105:9 indicates the covenant promise applies to Abraham's descendants.
Romans 9:6-8: Not as though the word of God hath taken none effect. For they [are] not all Israel, which are of Israel: