The Reaping

I is watches this movies yesterday calling the "The Reaping". I is not undertsands many parts where the movies tells me. What first born, what second born, goods or evils, I is really donts know. The movies tryings to makes you believes that the little cute girls is a bad girl, then in the end it is like God is protects her, makes her is good girl. The father already say that the girl is a bad girl, but why is God is to protects her? Then why in the end, the main actor, got pregnant and it is the son of one of the bad guy, and it is bad baby because he is second born, that is why her face not smile. but why the girl is also second born, she is not bad and good? really is confuse. anyone cares to tells me what is gone on?