Contradiction with Matthew 5:22
This verse instructs not to be angry with a brother, which might imply speaking rather than holding peace in a situation that requires addressing a wrong.
Matthew 5:22: But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire. [Raca: that is, Vain fellow]
Contradiction with Proverbs 26:4
Advises not to answer a fool according to his folly, which seems contradictory to keeping silent regardless of the situation.
Proverbs 26:4: Answer not a fool according to his folly, lest thou also be like unto him.
Contradiction with Ecclesiastes 3:7
States there is a time to keep silence and a time to speak, suggesting there are circumstances where speaking is necessary.
Ecclesiastes 3:7: A time to rend, and a time to sew; a time to keep silence, and a time to speak;
Contradiction with Acts 18:9
Encourages speaking and not holding peace when delivering God's message, which contradicts the idea of remaining silent.
Acts 18:9: Then spake the Lord to Paul in the night by a vision, Be not afraid, but speak, and hold not thy peace:
Contradiction with Isaiah 58:1
Commands to cry aloud and not hold back to declare transgressions, contrasting with silence in potentially wicked situations.
Isaiah 58:1: Cry aloud, spare not, lift up thy voice like a trumpet, and shew my people their transgression, and the house of Jacob their sins. [aloud: Heb. with the throat]