1 Corinthians 7:39

7:39 A wife is bound as long as her husband is living. But if her husband dies, she is free to marry anyone she wishes (only someone in the Lord).

1 Corinthians 11:6

11:6 For if a woman will not cover her head, she should cut off her hair. But if it is disgraceful for a woman to have her hair cut off or her head shaved, she should cover her head.