Assurance and Self-Examination
When you read
Paul has presented the Corinthian church with his observation about communion, and in the second reference, he's writing to people who were already Christians. Paul was urging the church at Corinth to examine themselves regularly to avoid God's further judgment (1 Corinthians 11:32).
I don't want you to ever doubt or be confused about the authenticity of your salvation. But as many as received Him, to them he gave the right to become children of God... (John 1:12).