Envy will cause a person to behave in a way that is campus and crude- even animalistic at times. Envy caused Joseph’s brothers to sell him into slavery. They hated him because of their father lover him so much. 

If there is someone in your famiky who seems to ha e more favour than you, don’t hate that individual. Trust God!  Do what he asks you to do- believe Him for favour and you will end up like Joseph. Extremely blessed.