"Just balances, just weights, a just ephah, and a just hin, shall ye have"

"A soft answer turneth away wrath: but grievous words stir up anger."

"The beginning of strife is as when one letteth out water: therefore leave off contention, before it be meddled with."

"A brother offended is harder to be won than a strong city: and their contentions are like the bars of a castle."

And here is one for me:

"He that passeth by, and meddleth with strife belonging not to him, is like one that taketh a dog by the ears."