Lesbian in the closet

Hi I'm from Canada and I'm still in the closet I have came out to four people though and I'm still in highschool I want to come out to my family during summer vacation but its hard because my dad thinks that being gay/lesbian is an attack on god and we always have arguments about lgbt things because things that he says are so out of nowhere I'm just so scared to come out I'm ok with who I am I just hope my family can except me and under stand that I've always been a lesbian and I didn't just choose it or that I'm going through a phase