Question: where in the bible does it say we will not know each other in heaven?
Answer: In fact, the Bible indicates we will know each other more fully than we do now. The Apostle Paul declared, "Now I know in part; then I shall know fully, even as I am fully known" (1 Corinthians 13:12). It's true that our appearance will change, because God will give us new bodies, similar to Jesus' resurrection body.