Proverbs 17.17 17 A friend loveth at all times, and a brother is born for adversity.
Proverbs 18.24  24 A man that hath friends must shew himself friendly: and there is a friend that sticketh closer than a brother.

Proverbs 27.10 10 Thine own friend, and thy father's friend, forsake not; neither go into thy brother's house in the day of thy calamity: for better is a neighbour that is near than a brother far off.