Leviticus 21:2

But only for his near relations, for his mother or his father, his son or his daughter, and his brother;

Leviticus 18:6

You may not have sex connection with anyone who is a near relation: I am the Lord.

1 Thessalonians 4:13

But it is our desire, brothers, that you may be certain about those who are sleeping; so that you may have no need for sorrow, as others have who are without hope.

Treasury of Scripture Knowledge did not add

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain