Blackwolf, don't forget your parents are just as much of a victim of this cult as you were. Have some pitty for them. Even if you don't believe, take the objective stand and act from the perspective of someone who would, then you can slowly attempt to prove them that even then they are taking the wrong approach. Is true, you need evidence to believe in God and even the bible shows that. Don't tell them that so directly. See their answers, the think the evidence is all around them. Do some reading, take them to the bible and show them that the "type" of evidence required is not the same. Show them that almost every character in the bible has at some point demanded proof from God. I don't have much more time to type now but if you want some pointers, PM me. There is plenty of evidence in the bible that there is nothing wrong with demanding that God shows himself for what he supposedly is. There is evidence that in fact, with more digging off course, that no only God wants you to test him but that he does indeed test his followers to see if they themselves are worthy of trust from God.