Communion is a symbolic rite reminding us of Jesus’ sacrificial death for us as the solution for the wrong things we have done.
This is all good.
However, Paul warns against the abuse of this important ritual. He is critical of those partaking in the practice of communion in “an unworthy manner” and “without discernment.” The result of this mistaking is “judgment” and becoming “weak and sick,” even dying.
He advises the proper approach to Communion is via self-examination, the result of which will most likely be proceeding with reverence and humility. Perhaps that’s why it is often called “Holy Communion.”