Never judge a book by its cover because Jesus wouldn’t want us to do that. We should really focus on a person’s character instead. He wants us to love other people (like our friends) the way He loved us.
John 13:34 – Love one another, as I have loved you.
Matthew 7:1-2 – Don’t judge other people, and you will not be judged. You will be judged in the same way that you judge others. And the forgiveness you give to others will be given to you (ICB).