Contradiction with Psalm 103:9
Contradicts Isaiah 57:16 as it states that God will not always chide, nor will He keep His anger forever, suggesting the possibility of God's enduring patience and mercy.
Psalm 103:9: He will not always chide: neither will he keep [his anger] for ever.
Contradiction with Jeremiah 3:12
Contradicts Isaiah 57:16 by showing God's mercy, stating that He will not keep His anger forever if the people return to Him.
Jeremiah 3:12: Go and proclaim these words toward the north, and say, Return, thou backsliding Israel, saith the LORD; [and] I will not cause mine anger to fall upon you: for I [am] merciful, saith the LORD, [and] I will not keep [anger] for ever.
Contradiction with Lamentations 3:31-33
Contradicts Isaiah 57:16 by emphasizing that God does not willingly afflict or grieve the children of men and He will not cast off forever.
Lamentations 3:31-33: For the Lord will not cast off for ever: