Genesis 20:12

And yet indeed, she is also my sister; she is the daughter of my father, but not the daughter of my mother; and she became my wife.

Genesis 11:29

And Abram and Nahor took wives for themselves; the name of Abram's wife was Sarai, and the name of Nahor's wife, Milcah, the daughter of Haran, the father of Milcah and the father of Iscah.

Genesis 12:13

Say, I pray thee, thou art my sister, that it may be well with me for thy sake; and my soul shall live because of thee.

1 Thessalonians 5:22

Separate yourselves from all appearance of evil.

Treasury of Scripture Knowledge

Summary

And yet indeed she is my sister; she is the daughter of my father, but not the daughter of my mother; and she became my wife.

General references

Bible References

And yet

Genesis 11:29
And Abram and Nahor took wives for themselves; the name of Abram's wife was Sarai, and the name of Nahor's wife, Milcah, the daughter of Haran, the father of Milcah and the father of Iscah.
Genesis 12:13
Say, I pray thee, thou art my sister, that it may be well with me for thy sake; and my soul shall live because of thee.
1 Thessalonians 5:22
Separate yourselves from all appearance of evil.

General references

Leviticus 20:17
And if a man shall take his sister, his father's daughter, or his mother's daughter and see her nakedness, and she see his nakedness; it is a wicked thing; and they shall be killed in the sight of the sons of their people; he has uncovered his sister's nakedness; he shall bear his iniquity.