ISN'T THIS OPPOSED TO THE SPIRIT OF GRACE

JESUS died for the sins of ALL people;  BUT, not ALL people are "invited" to partake "IN REMEMBRANCE OF ME"  at Communion.  1 Corinthians 11:28, "Let a person examine himself,  and so eat of the bread and drink of the cup".   Does "religion" define and impose minimum standards as "WORTHINESS TESTS" for Communion?  Has man established how to be "wholly HOLY" lines between "US AND THEM"?  US can take Communion; but THEM are not worthy to take Communion.    Does "examine himself" mean for one to understand the unselfish, atoning nature of JESUS' death for others?  Ephesians 2:14, "HE HIMSELF...has broken down the wall of hostility".   Should "religion" exclude people from Communion, (when the Bible says, "examine himself")?  ISN'T THIS OPPOSED TO THE SPIRIT OF GRACE?   Luke 5:32, "I have not come to call the righteous, but sinners to repentance".