Contradiction with Matthew 5:17
This verse says Jesus came not to abolish the law, but to fulfill it, which could be seen as shifting the focus from the old commandments.
Matthew 5:17: Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.
Contradiction with Romans 10:4
States that Christ is the end of the law for righteousness, contrasting with the continued observance implied in Deuteronomy 6:1.
Romans 10:4: For Christ [is] the end of the law for righteousness to every one that believeth.
Contradiction with Galatians 3:10
Points out that relying on the law brings a curse, contradicting the notion that following the law will lead to blessings as suggested in Deuteronomy 6:1.
Galatians 3:10: For as many as are of the works of the law are under the curse: for it is written, Cursed [is] every one that continueth not in all things which are written in the book of the law to do them.
Contradiction with Hebrews 8:13
By calling the covenant old, it implies that the commandments given in Deuteronomy 6:1 are obsolete with the new covenant coming.
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 Colossians 2:14
Mentions the law being nailed to the cross, suggesting a nullification of laws like those introduced in Deuteronomy 6:1.
Colossians 2:14: Blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross;