'Preserve' in the Bible

Come, let's make our father drink wine, and we will lie with him, that we may preserve our father's seed."

It came to pass on the next day, that the firstborn said to the younger, "Behold, I lay last night with my father. Let us make him drink wine again, tonight. You go in, and lie with him, that we may preserve our father's seed."

Now don't be grieved, nor angry with yourselves, that you sold me here, for God sent me before you to preserve life.

God sent me before you to preserve for you a remnant in the earth, and to save you alive by a great deliverance.