Genesis 20:12

and also, truly she is my sister, daughter of my father, only not daughter of my mother, and she becometh my wife;

Genesis 11:29

And Abram and Nahor take to themselves wives; the name of Abram's wife is Sarai, and the name of Nahor's wife is Milcah, daughter of Haran, father of Milcah, and father of Iscah.

Genesis 12:13

say, I pray thee, thou art my sister, so that it is well with me because of thee, and my soul hath lived for thy sake.'

1 Thessalonians 5:22

from all appearance of evil abstain ye;

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 take to themselves wives; the name of Abram's wife is Sarai, and the name of Nahor's wife is Milcah, daughter of Haran, father of Milcah, and father of Iscah.
Genesis 12:13
say, I pray thee, thou art my sister, so that it is well with me because of thee, and my soul hath lived for thy sake.'
1 Thessalonians 5:22
from all appearance of evil abstain ye;

General references

Leviticus 20:17
'And a man who taketh his sister, a daughter of his father or daughter of his mother, and he hath seen her nakedness, and she seeth his nakedness: it is a shame; and they have been cut off before the eyes of the sons of their people; the nakedness of his sister he hath uncovered; his iniquity he beareth.