Contradiction with Genesis 11:9
Joshua 22:21 emphasizes unity among tribes, whereas Genesis 11:9 depicts division and scattering at Babel.
Genesis 11:9: Therefore is the name of it called Babel; because the LORD did there confound the language of all the earth: and from thence did the LORD scatter them abroad upon the face of all the earth. [Babel: that is, Confusion]
Contradiction with Judges 21:25
Joshua 22:21 suggests a collective decision and response, while Judges 21:25 reflects individual actions and lack of common leadership.
Judges 21:25: In those days [there was] no king in Israel: every man did [that which was] right in his own eyes.
Contradiction with Jeremiah 7:9
Joshua 22:21 involves honesty in declaring intent, but Jeremiah 7:9 lists deceitful actions contrary to open communication.
Jeremiah 7:9: Will ye steal, murder, and commit adultery, and swear falsely, and burn incense unto Baal, and walk after other gods whom ye know not;
Contradiction with Matthew 5:37
Joshua 22:21 involves a detailed explanation of intentions, whereas Matthew 5:37 emphasizes simplicity in one's words.
Matthew 5:37: But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil.
Contradiction with Matthew 23:27
Joshua 22:21 features sincere intentions, while Matthew 23:27 criticizes hypocrisy and outward appearances contrary to true motives.
Matthew 23:27: Woe unto you, scribes and Pharisees, hypocrites! for ye are like unto whited sepulchres, which indeed appear beautiful outward, but are within full of dead [men's] bones, and of all uncleanness.
Contradiction with Galatians 5:15
Joshua 22:21 is about resolving misunderstandings peacefully, whereas Galatians 5:15 warns against destructive conflict.
Galatians 5:15: But if ye bite and devour one another, take heed that ye be not consumed one of another.
Contradiction with James 3:16
Joshua 22:21 revolves around a peaceful resolution of a misunderstanding, while James 3:16 speaks of confusion and evil works.
James 3:16: For where envying and strife [is], there [is] confusion and every evil work. [confusion: Gr. tumult, or, unquietness]