Contradiction with John 3:16
Isaiah 33:19 describes a people of strange speech that shall not be understood, whereas John 3:16 emphasizes God's universal love and offer of salvation to all, regardless of language or nation.
John 3:16: For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
Contradiction with Genesis 11:7
Isaiah 33:19 notes a people with an obscure speech, but Genesis 11:7 recounts the initiation of diverse languages by God, which was a divine act rather than a negative plight as implied in Isaiah.
Genesis 11:7: Go to, let us go down, and there confound their language, that they may not understand one another's speech.
Contradiction with Acts 2:4
Isaiah 33:19 speaks of language as a barrier, unlike Acts 2:4, where language diversity is celebrated through the divine granting of the ability to speak in various tongues.
Acts 2:4: And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.
Contradiction with Revelation 7:9
Isaiah 33:19 suggests encountering strange languages is undesirable, contrary to Revelation 7:9, which envisions a harmonious assembly of diverse languages before God’s throne.
Revelation 7:9: After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands;