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 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).

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.