ANSWER: No! A person engaged in such activities has separated himself from God (Isaiah 59:1-2). He or she is no longer walking in the light and is out of fellowship with Him (1 John 1:6-7). Before one can worship acceptably, he or she must be in fellowship with Him, because in a state of separation He has hid His face from the impenitent sinner, that He will not hear (Isaiah 59:2)! Jesus said in the sermon on the mount that one is not to worship until he or she is reconciled to a brother who has ought against him (Matthew 5:23-24). How much more should an habitual sinner be first reconciled to the Lord before engaging in the worship activity of the Lord’s Supper!