Ruth 3:13

Tarry this night, and it shall be in the morning, that if he will perform unto you the part of a kinsman, well; let him do the kinsman's part: but if he will not do the part of a kinsman to you, then will I do the part of a kinsman to you, as the LORD lives: lie down until the morning.

Judges 8:19

And he said, They were my brethren, even the sons of my mother: as the LORD lives, if you had saved them alive, I would not slay you.

Ruth 4:5

Then said Boaz, The day you buy the field of the hand of Naomi, you must buy it also from Ruth the Moabitess, the wife of the dead, to raise up the name of the dead through his inheritance.

Jeremiah 4:2

And you shall swear, The LORD lives, in truth, in justice, and in righteousness; and the nations shall bless themselves in him, and in him shall they glory.

Deuteronomy 25:5-9

If brethren dwell together, and one of them dies, and has no child, the wife of the dead shall not marry outside unto a stranger: her husband's brother shall go in unto her, and take her to him as wife, and perform the duty of a husband's brother unto her.

Ruth 2:20

And Naomi said unto her daughter-in-law, Blessed be he of the LORD, who has not left off his kindness to the living and to the dead. And Naomi said unto her, The man is near of kin unto us, one of our closest kinsmen.

Matthew 22:24-27

Saying, Teacher, Moses said, If a man die, having no children, his brother shall marry his wife, and raise up children unto his brother.

2 Corinthians 1:23

Moreover I call God for a witness upon my soul, that to spare you I came not as yet unto Corinth.

Hebrews 6:16

For men verily swear by the greater: and an oath for confirmation is to them an end of all strife.

Treasury of Scripture Knowledge

Summary

Tarry this night, and it shall be in the morning, that if he will perform unto thee the part of a kinsman, well; let him do the kinsman's part: but if he will not do the part of a kinsman to thee, then will I do the part of a kinsman to thee, as the LORD liveth: lie down until the morning.

Bible References

If he will

Ruth 2:20
And Naomi said unto her daughter-in-law, Blessed be he of the LORD, who has not left off his kindness to the living and to the dead. And Naomi said unto her, The man is near of kin unto us, one of our closest kinsmen.
Ruth 4:5
Then said Boaz, The day you buy the field of the hand of Naomi, you must buy it also from Ruth the Moabitess, the wife of the dead, to raise up the name of the dead through his inheritance.
Deuteronomy 25:5
If brethren dwell together, and one of them dies, and has no child, the wife of the dead shall not marry outside unto a stranger: her husband's brother shall go in unto her, and take her to him as wife, and perform the duty of a husband's brother unto her.
Matthew 22:24
Saying, Teacher, Moses said, If a man die, having no children, his brother shall marry his wife, and raise up children unto his brother.

The lord liveth

Judges 8:19
And he said, They were my brethren, even the sons of my mother: as the LORD lives, if you had saved them alive, I would not slay you.
Jeremiah 4:2
And you shall swear, The LORD lives, in truth, in justice, and in righteousness; and the nations shall bless themselves in him, and in him shall they glory.
2 Corinthians 1:23
Moreover I call God for a witness upon my soul, that to spare you I came not as yet unto Corinth.
Hebrews 6:16
For men verily swear by the greater: and an oath for confirmation is to them an end of all strife.