Contradiction with Matthew 15:9
Jesus criticizes those who worship in vain by teaching human commandments as doctrines, which can be seen as a contradiction to the emphasis on hearing and keeping God's word in Luke 11:28.
Matthew 15:9: But in vain they do worship me, teaching [for] doctrines the commandments of men.
Contradiction with Romans 2:13
This verse emphasizes that merely hearing the law does not justify a person before God, but doing the law is what justifies, somewhat contradicting the blessing on those who hear and keep the word.
Romans 2:13: (For not the hearers of the law [are] just before God, but the doers of the law shall be justified.
Contradiction with James 2:24
It stresses that a person is justified by works and not by faith only, whereas Luke 11:28 highlights the blessedness of hearing and keeping the word, potentially implying a focus on faith.
James 2:24: Ye see then how that by works a man is justified, and not by faith only.
Contradiction with Galatians 3:10
It states that all who rely on the works of the law are under a curse, which seems to contradict the blessing on keeping the word of God suggested in Luke 11:28.
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 John 5:39
Jesus points out that searching the scriptures doesn’t lead to life without coming to Him, which contrasts with the blessedness associated with hearing and keeping the word in Luke 11:28.
John 5:39: Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.