'Preserve' in the Bible

come, let us make our father drink wine, and we will lie with him, that we may preserve seed of our father.

And it came to pass on the morrow, that the first-born said unto the younger, Behold, I lay yesternight with my father: 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.

And now be not grieved, nor angry with yourselves, that ye sold me hither: for God did send me before you to preserve life.

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