The Bible has plenty of guidance on how to recognize genuine friendships and how to avoiding corrupting influences.
Then, in about the year 70, the evangelist known as Mark wrote the first "gospel" -- the words mean "good news" about Jesus. We will never know the writer's real identity, or even if his name was ...
The gospels are not biographies in the modern sense of the word ... are against Jesus in the passion. The difficulty for us is to take the term "gospel" seriously. It means "good news." ...