Deuteronomy 25:6

Overview - Deuteronomy 25
Stripes must not exceed forty.
The ox is not to be muzzled.
Of raising seed unto a brother.
11 Of the immodest woman.
13 Of unjust weights and measures.
17 The memory of Amalek is to be blotted out.
Treasury of Scripture Knowledge

Deuteronomy 25:6  (King James Version)
And it shall be, that the firstborn which she beareth shall succeed in the name of his brother which is dead, that his name be not put out of Israel.

the first-born
Genesis 28:8-10

that his name
9:14 29:20 Ruth 4:10-12 ; Psalms 9:5 ; 109:13

brother's wife
or, next kinsman's wife. go up.
21:19 Ruth 4:1-7