'Preserve' in the Bible

come, let us give our father wine to drink, and let us lie with him, that we may preserve seed alive of our father.

And it came to pass on the next day that the first-born said to the younger, Lo, I lay last night with my father: let us give him wine to drink to-night also, and go thou in, lie with him, that we may preserve seed alive of our father.

And now, be not grieved, and be not angry with yourselves, that ye sold me hither, for God sent me before you to preserve life.

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