Contradiction with 1 John 1:6
If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth: this suggests deception whereas Romans 9:1 speaks of truth.
1 John 1:6: If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth:
Contradiction with Proverbs 12:22
Lying lips are abomination to the LORD: whereas Romans 9:1 emphasizes speaking the truth in Christ.
Proverbs 12:22: Lying lips [are] abomination to the LORD: but they that deal truly [are] his delight.
Contradiction with Colossians 3:9
Lie not one to another: contrasts with Romans 9:1 affirming speaking the truth.
Colossians 3:9: Lie not one to another, seeing that ye have put off the old man with his deeds;
Contradiction with John 8:44
Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him: this indicates falsehood against Romans 9:1's claim of truth.
John 8:44: Ye are of [your] father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it. [of his own: or, from his own will or disposition]