Contradiction with James 3:16
Zechariah 14:13 speaks of tumultuous confusion leading to fighting among people, whereas James 3:16 suggests that where there is envy and strife, there is confusion and every evil work, implying that strife is a cause, not an effect.
James 3:16: For where envying and strife [is], there [is] confusion and every evil work. [confusion: Gr. tumult, or, unquietness]
Contradiction with 1 Corinthians 14:33
Zechariah 14:13 depicts God as causing panic and confusion, while 1 Corinthians 14:33 states that God is not the author of confusion, implying He creates peace instead.
1 Corinthians 14:33: For God is not [the author] of confusion, but of peace, as in all churches of the saints. [confusion: Gr. tumult, or, unquietness]
Contradiction with Romans 8:28
Zechariah 14:13 describes destructive turmoil among people, whereas Romans 8:28 emphasizes that all things work together for good for those who love God, implying positive outcomes.
Romans 8:28: And we know that all things work together for good to them that love God, to them who are the called according to [his] purpose.