Contradiction with Jonah 1:3
In Romans 15:24, Paul expresses his intent to visit and be helped by others in his journey, while Jonah flees from his mission, showing a lack of desire to visit where he is sent.
Jonah 1:3: But Jonah rose up to flee unto Tarshish from the presence of the LORD, and went down to Joppa; and he found a ship going to Tarshish: so he paid the fare thereof, and went down into it, to go with them unto Tarshish from the presence of the LORD.
Contradiction with Acts 16:6-7
Romans 15:24 indicates Paul's planning to visit Spain and being welcomed, while Acts 16:6-7 describes the Holy Spirit preventing Paul from visiting certain places.
Acts 16:6-7: Now when they had gone throughout Phrygia and the region of Galatia, and were forbidden of the Holy Ghost to preach the word in Asia,
Contradiction with James 4:13-15
Romans 15:24 discusses planning to travel based on Paul's desire, while James 4:13-15 advises against boasting about future plans without considering God's will.
James 4:13-15: Go to now, ye that say, To day or to morrow we will go into such a city, and continue there a year, and buy and sell, and get gain:
Contradiction with Matthew 10:5-6
Romans 15:24 shows Paul's eagerness to preach beyond Judea, whereas Matthew 10:5-6 records Jesus instructing the disciples not to go to the Gentiles or Samaritans at that time.
Matthew 10:5-6: These twelve Jesus sent forth, and commanded them, saying, Go not into the way of the Gentiles, and into [any] city of the Samaritans enter ye not:
Contradiction with Acts 20:22-23
Romans 15:24 discusses Paul's intention of planning his journey with hopeful assistance, while Acts 20:22-23 highlights that Paul knows he will face hardships despite his plans.
Acts 20:22-23: And now, behold, I go bound in the spirit unto Jerusalem, not knowing the things that shall befall me there: