Genesis 19:34

34 The next day the firstborn said to the younger, "Look, I slept with my father last night. Let's get him to drink wine again tonight so you can go sleep with him and we can preserve our father's line."

Genesis 19:34 Meaning and Commentary

Genesis 19:34

And it came to pass on the morrow
The day following the night, in which the above was transacted: that the firstborn said to the younger, behold, I lay yesternight with
my father;
informed her, that what they had contrived succeeded according to their wish, and therefore, for her encouragement to go on, proposes to take the same method again: let us make him drink wine this night also, and go thou in [and] lie
with him, that we may preserve seed of our father;
may have children by him, and so our family be kept up, from whence it may be hoped the Messiah will spring, (See Gill on Genesis 19:32).

Genesis 19:34 In-Context

32 Come, let's get our father to drink wine so that we can sleep with him and preserve our father's line."
33 So they got their father to drink wine that night, and the firstborn came and slept with her father; he did not know when she lay down or when she got up.
34 The next day the firstborn said to the younger, "Look, I slept with my father last night. Let's get him to drink wine again tonight so you can go sleep with him and we can preserve our father's line."
35 That night they again got their father to drink wine, and the younger went and slept with him; he did not know when she lay down or when she got up.
36 So both of Lot's daughters became pregnant by their father.
Holman Christian Standard Bible ® Copyright © 2003, 2002, 2000, 1999 by Holman Bible Publishers.  Used by permission.  All rights reserved.