Pro 18:15 The heart of the prudent getteth knowledge; and the ear of the wise seeketh knowledge.
Pro 18:16 A man's gift maketh room for him, and bringeth him before great men.
Pro 18:17 He that is first in his own cause seemeth just; but his neighbour cometh and searcheth him.
Pro 18:18 The lot causeth contentions to cease, and parteth between the mighty.
Pro 18:19 A brother offended is harder to be won than a strong city: and their contentions are like the bars of a castle.
It is good not to offend friends, as they are hard to win back, especially if trust is broken.