1 Samuel 18:1

And it came to pass, when he had ended speaking to Saul, that the soul of Jonathan was knit with the soul of David, and Jonathan loved him as his own soul.

2 Samuel 1:26

I am distressed for thee, my brother Jonathan: very pleasant wast thou unto me; Thy love to me was wonderful, passing women's love.

Genesis 44:30

And now, when I come to thy servant my father, and the lad is not with us, seeing that his life is bound up with his life,

Deuteronomy 13:6

If thy brother, the son of thy mother, or thy son, or thy daughter, or the wife of thy bosom, or thy friend, who is to thee as thy soul, entice thee secretly, saying, Let us go and serve other gods (whom thou hast not known, thou, nor thy fathers;

1 Samuel 20:17

And Jonathan caused David to swear again, by the love he had for him, for he loved him as he loved his own soul.

1 Samuel 19:2

But Jonathan Saul's son delighted much in David. And Jonathan told David, saying, Saul my father seeks to kill thee; and now, I pray thee, take heed to thyself in the morning, and abide in a secret place and hide thyself;

Judges 20:11

So all the men of Israel gathered against the city, united as one man.

1 Samuel 14:1-14

Now it came to pass one day that Jonathan the son of Saul said to the young man that bore his armour, Come and let us go over to the Philistines' garrison which is on the other side. But he did not tell his father.

1 Samuel 14:45

And the people said to Saul, Shall Jonathan die, who has wrought this great salvation in Israel? Far be it! as Jehovah liveth, there shall not a hair of his head fall to the ground; for he has wrought with God this day. So the people delivered Jonathan, that he died not.

1 Samuel 18:3

And Jonathan and David made a covenant, because he loved him as his own soul.

1 Chronicles 12:17

And David went out to meet them, and answered and said to them, If ye come peaceably to me to help me, my heart shall be knit unto you; but if to betray me to mine enemies, seeing there is no wrong in my hands, the God of our fathers see it and rebuke it.

Psalm 86:11

Teach me thy way, Jehovah; I will walk in thy truth: unite my heart to fear thy name.

Proverbs 18:24

A man of many friends will come to ruin but there is a friend that sticketh closer than a brother.

Colossians 2:2

to the end that their hearts may be encouraged, being united together in love, and unto all riches of the full assurance of understanding, to the full knowledge of the mystery of God;

Treasury of Scripture Knowledge

Summary

And it came to pass, when he had made an end of speaking unto Saul, that the soul of Jonathan was knit with the soul of David, and Jonathan loved him as his own soul.

Bible References

The soul of jonathan

Genesis 44:30
And now, when I come to thy servant my father, and the lad is not with us, seeing that his life is bound up with his life,
Judges 20:11
So all the men of Israel gathered against the city, united as one man.
1 Chronicles 12:17
And David went out to meet them, and answered and said to them, If ye come peaceably to me to help me, my heart shall be knit unto you; but if to betray me to mine enemies, seeing there is no wrong in my hands, the God of our fathers see it and rebuke it.
Psalm 86:11
Teach me thy way, Jehovah; I will walk in thy truth: unite my heart to fear thy name.
Colossians 2:2
to the end that their hearts may be encouraged, being united together in love, and unto all riches of the full assurance of understanding, to the full knowledge of the mystery of God;

Loved him

1 Samuel 18:3
And Jonathan and David made a covenant, because he loved him as his own soul.
1 Samuel 19:2
But Jonathan Saul's son delighted much in David. And Jonathan told David, saying, Saul my father seeks to kill thee; and now, I pray thee, take heed to thyself in the morning, and abide in a secret place and hide thyself;
1 Samuel 20:17
And Jonathan caused David to swear again, by the love he had for him, for he loved him as he loved his own soul.
Deuteronomy 13:6
If thy brother, the son of thy mother, or thy son, or thy daughter, or the wife of thy bosom, or thy friend, who is to thee as thy soul, entice thee secretly, saying, Let us go and serve other gods (whom thou hast not known, thou, nor thy fathers;
2 Samuel 1:26
I am distressed for thee, my brother Jonathan: very pleasant wast thou unto me; Thy love to me was wonderful, passing women's love.
Proverbs 18:24
A man of many friends will come to ruin but there is a friend that sticketh closer than a brother.