I think anyone who is reasonably intelligent, say, from the 5th grade on, would recognize that, just because you have decided to end any further discussions regarding your religion to a family member, would not mean that you have then judged them as "unworthy of gaining everlasting life"!
Good grief! Can we all just take a step back and give folks the benefit of the doubt? Damn!
Maybe the in-laws just don't want to hear it. That's all. Talk about the weather, or president Trump for crying out loud, but to say that your decision to cease discussion about religion means that you have judged them is revealing to what the GB thinks. That is, that they don't think. But when they do, they f&ck it up!