Obsessing over other people’s problems

So lately I’ve been having really bad intrusive thoughts. I’m a Christian and this past year whenever a nonbeliever authority figure in my life is living a sinful lifestyle I’ll feel depressed and empty and I won’t be able to stop ruminating over it. In my DBT skills group the therapist leading it talks about having a partner a lot and takes God’s name in vain. I feel guilty taking advice from someone who lives a lifestyle I don’t agree with. I just can’t stop obsessing over other people’s sins and it’s making me feel depressed. I’m thinking I’ll talk to my main therapist about it who’s the DBT skills therapist’s supervisor. But I’m scared to and worried I’ll sound controlling. But I feel like these thoughts are controlling me! I feel like God is telling me I don’t need to feel the weight of their sins because He already died for them, but it’s hard to stop ruminating!