What does the Bible say about friendship and love?

The Bible emphasizes the importance of friendship in Proverbs 18:24, where it states that a friend must show himself friendly and that there is a friend who sticks closer than a brother. This concept reflects the vulnerability required in true friendship, where friends support and uplift one another in their weaknesses. Jesus exemplifies perfect love in John 15:13, declaring that greater love has no man than to lay down his life for his friends, demonstrating the highest form of sacrificial love that believers are called to emulate.