What does the Bible say about friendship?

Relationships

Short answer

The Bible treats friendship as a serious good, not a lesser bond than family: "there is a friend that sticketh closer than a brother" (Proverbs 18:24), and "a friend loveth at all times" (Proverbs 17:17). Real friendship is marked by loyalty, honesty, and mutual sharpening, "faithful are the wounds of a friend" (Proverbs 27:6), and "iron sharpeneth iron; so a man sharpeneth the countenance of his friend" (Proverbs 27:17). Scripture's great friendships model it: David and Jonathan's covenant loyalty (1 Samuel 18:1-3), Ruth and Naomi's "thy people shall be my people" (Ruth 1:16-17). Jesus raises it to its height, "Greater love hath no man than this, that a man lay down his life for his friends," and he calls his disciples friends (John 15:13-15). The Bible also warns that company shapes character: "he that walketh with wise men shall be wise" (Proverbs 13:20; 1 Corinthians 15:33).

Question

Analysis

Friendship's biblical dignity

Proverbs 18:24 and John 15:13-15 together set the bar: a true friend outlasts even kin, and Christ defines the highest friendship as self-sacrifice. Abraham was called "the Friend of God" (James 2:23; cf. 2 Chronicles 20:7; Isaiah 41:8), and the LORD spoke to Moses "as a man speaketh unto his friend" (Exodus 33:11), friendship is even a category for relationship with God.

The canonical patterns

Friendship	Reference	Mark
David + Jonathan	1 Samuel 18:1-3; 2 Samuel 1:26	Covenant loyalty; self-sacrifice
Ruth + Naomi	Ruth 1:16-17	Loyalty across generations and cultures
Jesus + the Twelve	John 15:13-15	Master to friends; love that lays down its life
Paul + Timothy	1 Corinthians 4:17; 1 Timothy 1:2	Mentor and "son in the faith"

Wisdom for friendship

Choose carefully, Proverbs 13:20; 1 Corinthians 15:33 ("evil communications corrupt good manners").
Tell the truth in love, Proverbs 27:6; flatterers harm, true friends correct.
Sharpen one another, Proverbs 27:17.
Bear burdens and forgive, Galatians 6:2; Proverbs 17:9.
Two are better than one, Ecclesiastes 4:9-12.

The church as friendship community

The New Testament's roughly fifty "one another" commands frame the local church as the primary place this is lived: love one another (John 13:34-35), bear one another's burdens (Galatians 6:2), encourage one another (1 Thessalonians 5:11; Hebrews 10:25), forgive one another (Ephesians 4:32).

Two points handled with care (multi-view)

David and Jonathan, the historic and ANE-context reading is a covenanted deep friendship ("passing the love of women," 2 Samuel 1:26, i.e. surpassing ordinary loyalty), not a romantic relationship; some recent readings differ. This reference notes the friendship-covenant reading as the textually grounded majority and flags the alternative as a minority interpretation.
Cross-gender friendship, Scripture commends purity and wisdom (treat others "as sisters, with all purity," 1 Timothy 5:1-2) but does not command strict separation; this is a matter of practical wisdom, and Christians apply it differently.

Sources, trace every one

Every cited verse, in full. Tap any reference to open it in the reader.

Proverbs 18:24bsb
A man of many companions may come to ruin, but there is a friend who stays closer than a brother.
Proverbs 17:17bsb
A friend loves at all times, and a brother is born for adversity.
Proverbs 27:6bsb
The wounds of a friend are faithful, but the kisses of an enemy are deceitful.
Proverbs 27:17bsb
As iron sharpens iron, so one man sharpens another.
1 Samuel 18:1bsb
After David had finished speaking with Saul, the souls of Jonathan and David were knit together, and Jonathan loved him as himself.
Ruth 1:16bsb
But Ruth replied: “Do not urge me to leave you or to turn from following you. For wherever you go, I will go, and wherever you live, I will live; your people will be my people, and your God will be my God.
John 15:13bsb
Greater love has no one than this, that he lay down his life for his friends.
Proverbs 13:20bsb
He who walks with the wise will become wise, but the companion of fools will be destroyed.
1 Corinthians 15:33bsb
Do not be deceived: “Bad company corrupts good character.”
James 2:23bsb
And the Scripture was fulfilled that says, “Abraham believed God, and it was credited to him as righteousness,” and he was called a friend of God.
2 Chronicles 20:7bsb
Our God, did You not drive out the inhabitants of this land before Your people Israel and give it forever to the descendants of Abraham Your friend?
Isaiah 41:8bsb
“But you, O Israel, My servant, Jacob, whom I have chosen, descendant of Abraham My friend—
Exodus 33:11bsb
Thus the LORD would speak to Moses face to face, as a man speaks to his friend. Then Moses would return to the camp, but his young assistant Joshua son of Nun would not leave the tent.
2 Samuel 1:26bsb
I grieve for you, Jonathan, my brother. You were delightful to me; your love to me was extraordinary, surpassing the love of women.
1 Corinthians 4:17bsb
That is why I have sent you Timothy, my beloved and faithful child in the Lord. He will remind you of my way of life in Christ Jesus, which is exactly what I teach everywhere in every church.
1 Timothy 1:2bsb
To Timothy, my true child in the faith: Grace, mercy, and peace from God the Father and Christ Jesus our Lord.

On contested questions we show every major view, attributed and cited, and pick no winner. Answers are synthesized from primary sources, truth you can trace, not opinion.