John 15:13-15 Greater love has no one than this, than to lay down one's life for his friends. You are My friends if you do whatever I command you. No longer do I call you servants, for a servant does not know what his master is doing; but I have called you friends, for all things that I heard from My Father I have made known to you.
Proverbs 18:24 A man who has friends must himself be friendly, But there is a friend who sticks closer than a brother.
Proverbs 27:17 As iron sharpens iron, So a man sharpens the countenance of his friend.
James 4:4 Adulterers and adulteresses! Do you not know that friendship with the world is enmity with God? Whoever therefore wants to be a friend of the world makes himself an enemy of God.