Do you have some examples of your posts on Facebook?
Perhaps you are expressing your beliefs (or lack of beliefs) in a matter than may be more offensive to some than it needs to be.
I have friends from both sides of the political spectrum (the closest example I experience to your situation) that post quite rude comments about people with different views than their own (I generally ignore them, which might be something you can tell your friends who are upset about what you post...maybe even, "if you don't like what you I post, you can de-friend me"....saw something like that in my News Feed after work one day) when they could easily post the same idea while still showing a degree of respect to their friends.
Perhaps you are expressing your beliefs (or lack of beliefs) in a matter than may be more offensive to some than it needs to be.
I have friends from both sides of the political spectrum (the closest example I experience to your situation) that post quite rude comments about people with different views than their own (I generally ignore them, which might be something you can tell your friends who are upset about what you post...maybe even, "if you don't like what you I post, you can de-friend me"....saw something like that in my News Feed after work one day) when they could easily post the same idea while still showing a degree of respect to their friends.
But if we walk in the light, as He is in the light, we have fellowship with one another, and the blood of Jesus, His Son, purifies us from all sin.
