During the ice Age many animals died because of the cold. Seeing this situation, the porcupines decided to group together so they wrapped up well and protected one another.
But they hurt one another with their thorns and so they decided to stay apart from one another.
They started to freeze again and some began to die. So they had to make a choice; either they gave way to death by freezing or they accepted their neighbor's thorns.
They wisely decided to stay together again. They learned to live with the small wounds that a very close relationship could cause because the most important thing was the warmth given by the other.
In the end... they all survived.
Therefore, as the elect of God, holy and beloved, put on tender mercies, kindness, humility, meekness, longsuffering; bearing with one another, and forgiving one another, if anyone has a complaint against another; even as Christ forgave you, so you also must do. But above all these things put on love, which is the bond of perfection.
--- Colossians 3:12-14 (NKJV)