Contradiction with Matthew 7:7
This verse encourages people to ask and they will receive, which contradicts Matthew 15:25 where the woman must persistently plead for Jesus' help.
Matthew 7:7: Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:
Contradiction with James 1:6
This verse instructs believers to ask in faith without wavering, whereas Matthew 15:25 depicts the woman repeatedly pleading, which might imply doubt.
James 1:6: But let him ask in faith, nothing wavering. For he that wavereth is like a wave of the sea driven with the wind and tossed.
Contradiction with Matthew 10:5-6
Jesus instructs His disciples not to go to the Gentiles, whereas in Matthew 15:25, a Gentile woman is asking for His help, indicating a contradiction in treatment.
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 Matthew 6:8
This verse states that God knows what we need before we ask, which contrasts with the Canaanite woman's repeated asking in Matthew 15:25.
Matthew 6:8: Be not ye therefore like unto them: for your Father knoweth what things ye have need of, before ye ask him.