What do I do?

i would say always know the path and then walk in it !

so have u thought of possible scenarios that might happen after telling them?

do u have answer for each of them?

A)they accept u :

well, congratz

B) they dont :

B-1)they will support u :

since they are religious they will ask too many questions and some of them might be insulting and harmful but its not that because they wanna hurt their child, its because that they are trying to get to know u. u have to prepared to answer them, u have to be very well educated to answer them scientifically as well, u have to have found ways of supporting urself with ur religion u have, like see how ur religion can be supportive of u which is not easy task and also u have to have too much patient and endurance and should not get angry and annoyed easily

B-2) they wont be supportive:

that case they will make u live the way u cant and hate!

they will say as long as u live under their roof u have to act under their rules !

and if u insist, they might think ur a sinful person or sick or possessed by demon or something that need to be cured! and if u again insist it might tear ur relationship with ur parents apart !

a key too all these scenarios and wise answer is that u become some one who can stand on his own, who can pay his bills and who knows what to do if things gone worse where u got kicked out of the house !

unless u dont have answer to all of the possible scenarios u have to wait, and u should know its ur privacy that u dont need to tell anyone, and once u did, u cannot load ur saved game back !

It depends upon your personal religious beliefs. If you practice the same religion that your parents do, and in said religion, homosexuality is prohibited, you need to tell your family and fight against it together. If you do not practice the same religion that your parents do, you should keep it a secret, and only speak to those who can professionally converse about it with yourself. Decide on whether or not you wish to fulfill your desires against your parents' wishes in secrecy, or if you wish to open up about it with them. I wish that they truly understand your situation :D