Gen 38:8 Then Judah3063 said559 to Onan209, "Go935 in to your brother's251 wife802, and perform2992 your duty2992 as a brother-in-law2992 to her, and raise6965 up offspring2233 for your brother251."
Deut 25:5 ¶ "When3588 brothers251 live3427 together3164a and one259 of them dies4191 and has369 no369 son1121, the wife802 of the deceased4191 shall not be married outside2351the family to a strange2114a man376. Her husband's2993 brother2993 shall go935 in to her and take3947 her to himself as wife802 and perform2992 the duty2992 of a husband's2992 brother2992 to her.
Deut 25:7 "But if518 the man376 does not desire2654a to take3947 his brother's2994 wife2994, then his brother's2994 wife2994 shall go5927 up to the gate8179 to the elders2205 and say559, 'My husband's2993 brother2993 refuses3985 to establish6965 a name8034 for his brother251 in Israel3478; he is not willing14 to perform2992 the duty2992 of a husband's2992 brother2992 to me.'