Deuteronomy 25:6
6 And the first son whom she bears shall succeed to the name of his brother who is dead, that his name may not be blotted out of Israel.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.
Matthew Henry's Commentary on Deuteronomy 25:6
Commentary on Deuteronomy 25:5-12
(Read Deuteronomy 25:5-12)
The custom here regulated seems to have been in the Jewish law in order to keep inheritances distinct; now it is unlawful.