1 Corinthians 11:28-30

New International Version

²⁸ Everyone ought to examine themselves^(A) before they eat of the bread and drink from the cup. ²⁹ For those who eat and drink without discerning the body of Christ eat and drink judgment on themselves. ³⁰ That is why many among you are weak and sick, and a number of you have fallen asleep.^(B)