Do You Feel Threatened?

If someone is willing to arouse in you feelings of fear of rejection (by them), whether that someone is relationally connected to you on a familial or platonic level, there's no doubt something you've done (or position you've taken) that makes that individual very uncomfortable.  And based on my experience, the more undiluted that conviction (fueling that something), the greater - proportionally - their threats to modify the parameters of their relationship with you.  

When their feelings of uncomfortableness are clearly justified (righteously via conviction), all the more reason for you to stand your ground.  Do not back down.  No matter how intensely you might fear their rejection.  No matter how much is "on the line". 

Remember that it's more important for those within your sphere of influence to repent than it is for them to like or even accept you.  Their eternal story overshadows everything else.  Always.

You may be the best conduit for funneling the voice of the Holy Spirit due to your longstanding relational connection (as a son, daughter, parent, uncle, aunt, grandmother, grandfather, best friend, and so forth).  Use it humbly to their advantage, praying constantly for God's guidance.

And always, always rise above their threats.