Bereshis 19:34

34 And it came to pass on the next day, that the bechirah said unto the younger, Hinei, I lay yesternight with avi. Let us make him drink yayin halailah also; and go thou in, and lie with him, that we may preserve zera by avinu.

Bereshis 19:34 In-Context

32 Come, let us make avinu drink yayin, and we will lie with him, that we may preserve zera by avinu.
33 And they made their av drink yayin balailah: and the bechirah went in, and lay with her av; and he had da’as not when she lay down, nor when she arose.
34 And it came to pass on the next day, that the bechirah said unto the younger, Hinei, I lay yesternight with avi. Let us make him drink yayin halailah also; and go thou in, and lie with him, that we may preserve zera by avinu.
35 And they made their av drink yayin balailah also; and the younger arose, and lay with him; and he had da’as not when she lay down, nor when she arose.
36 Thus were both the banot of Lot with child by their av.
The Orthodox Jewish Bible fourth edition, OJB. Copyright 2002,2003,2008,2010, 2011 by Artists for Israel International. All rights reserved.