Deuteronomy 25:5-7

KJV_Strongs(i)
  5 H251 If brethren H3427 dwell [H8799]   H3162 together H259 , and one H4191 of them die [H8804]   H1121 , and have no child H802 , the wife H4191 of the dead [H8801]   H2351 shall not marry without H376 unto a stranger H2114   [H8801]   H2993 : her husband's brother H935 shall go in [H8799]   H3947 unto her, and take [H8804]   H802 her to him to wife H2992 , and perform the duty of an husband's brother [H8762]   unto her.
  6 H1060 And it shall be, that the firstborn H3205 which she beareth [H8799]   H6965 shall succeed [H8799]   H8034 in the name H251 of his brother H4191 which is dead [H8801]   H8034 , that his name H4229 be not put out [H8735]   H3478 of Israel.
  7 H376 And if the man H2654 like [H8799]   H3947 not to take [H8800]   H2994 his brother's wife H2994 , then let his brother's wife H5927 go up [H8804]   H8179 to the gate H2205 unto the elders H559 , and say [H8804]   H2993 , My husband's brother H3985 refuseth [H8765]   H6965 to raise up [H8687]   H251 unto his brother H8034 a name H3478 in Israel H14 , he will [H8804]   H2992 not perform the duty of my husband's brother [H8763]  .