Contradiction with Exodus 34:6-7
These verses describe God as merciful and gracious, which appears to contradict the severity shown in Exodus 9:13.
Exodus 34:6-7: And the LORD passed by before him, and proclaimed, The LORD, The LORD God, merciful and gracious, longsuffering, and abundant in goodness and truth,
Contradiction with Ezekiel 18:23
God states that He takes no pleasure in the death of the wicked, which contrasts with the actions described in Exodus 9:13.
Ezekiel 18:23: Have I any pleasure at all that the wicked should die? saith the Lord GOD: [and] not that he should return from his ways, and live?
Contradiction with Jonah 4:2
Jonah acknowledges God’s tendency to relent from sending calamity, which seems to contradict the decision to send plagues in Exodus 9:13.
Jonah 4:2: And he prayed unto the LORD, and said, I pray thee, O LORD, [was] not this my saying, when I was yet in my country? Therefore I fled before unto Tarshish: for I knew that thou [art] a gracious God, and merciful, slow to anger, and of great kindness, and repentest thee of the evil.
Contradiction with 1 John 4:8
This verse states that God is love, which can be seen as contradictory to the actions of sending plagues seen in Exodus 9:13.
1 John 4:8: He that loveth not knoweth not God; for God is love.