How should I let a guy know I’m interested?

There’s a guy at my church that I have had a crush on the past couple months. I really admire his faith in God and he inspires me. I came to that church a year ago and slowly became a part of his friend group, which includes his 2 sisters as well, both of whom I’ve grown close to, and now I’ve become well acquainted with the others as well. I want to let him know that I like him but there’s a lot at stake here, if things don’t go well I don’t want to jeopardize my place in the group and my standing with his sisters. I was thinking of showing him I like him without actually telling him straight forward, and then seeing how he responds and going from there. Are there ways I could show him?