Answer
Proverbs 18:24
A man of many companions may come to ruin, but there is a friend who sticks closer than a brother.
John 15:13
Greater love has no one than this, that someone lay down his life for his friends.
Proverbs 27:17
Iron sharpens iron, and one man sharpens another.
Proverbs 17:17
A friend loves at all times, and a brother is born for adversity.
Ecclesiastes 4:9
Two are better than one, because they have a good reward for their toil.
1 Corinthians 15:33
Do not be deceived: “Bad company ruins good morals.”
1 Thessalonians 5:11
Therefore encourage one another and build one another up, just as you are doing.
Proverbs 27:9
Oil and perfume make the heart glad, and the sweetness of a friend comes from his earnest counsel.
Proverbs 27:6
Faithful are the wounds of a friend; profuse are the kisses of an enemy.
Job 6:14
He who withholds kindness from a friend forsakes the fear of the Almighty.
Proverbs 13:20
Whoever walks with the wise becomes wise, but the companion of fools will suffer harm.
Proverbs 16:28
A dishonest man spreads strife, and a whisperer separates close friends.
Hebrews 10:24
And let us consider how to stir up one another to love and good works.
Proverbs 22:24
Make no friendship with a man given to anger, nor go with a wrathful man.
Proverbs 17:9
Whoever covers an offense seeks love, but he who repeats a matter separates close friends.
Proverbs 12:26
One who is righteous is a guide to his neighbor, but the way of the wicked leads them astray.
Luke 6:31
And as you wish that others would do to you, do so to them.
James 4:4
You adulterous people! Do you not know that friendship with the world is enmity with God? Therefore whoever wishes to be a friend of the world makes himself an enemy of God.
Romans 1:12
That is, that we may be mutually encouraged by each other's faith, both yours and mine.
Proverbs 27:10
Do not forsake your friend and your father's friend, and do not go to your brother's house in the day of your calamity. Better is a neighbor who is near than a brother who is far away.
Unless otherwise noted, all Bible verses are from The Holy Bible, English Standard Version® Copyright© 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.
Special thanks to OpenBible.info for the data on the most well-known Bible verses.