Only sinners need the grace of Christ; therefore, only sinners can participate in the Lord’s Supper. But the only sinners who can freely commune with Jesus at His table are those who have acknowledged that they are sinners and have turned to Him as their only hope in life and in death. Do not let feelings of unworthiness prevent you from coming to His table. Jesus invites you to come and sit with Him if you are following Him in a life of repentance and faith.
For further study:
The Bible in a year: