It should be undeniable by all that the Bible’ teaching relative to the Lord’s Supper should occupy a place in Great Truths.

And as they were eating, Jesus took bread, and blessed it, and brake it, and gave it to the disciples, and said, Take, eat; this is my body. And he took the cup, and gave thanks, and gave it to them, saying, Drink ye all of it; For this is my blood of the new testament, which is shed for many for the remission of sins. But I say unto you, I will not drink henceforth of this fruit of the vine, until that day when I drink it new with you in my Father's kingdom (Matthew 26:26-29).

The Lord’s Supper is a memorial:

For as often as ye eat this bread, and drink this cup, ye do shew the Lord's death till he come (1 Corinthians 11:26).

The word “often” in this passage has been taken to mean “eat and drink as often as you like.” So, many will add the Lord’s Supper as part of different events: Weddings, funerals, Christmas Mass, etc.

Place and time of the observance of the Lord’s Supper:

But I say unto you, I will not drink henceforth of this fruit of the vine, until that day when I drink it new with you in my Father's kingdom (Matthew 26:29).

And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it. And I will give unto thee the keys of thekingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven (Matthew 16:18-19).

And upon the first day of the week, when the disciples came together to break bread, Paul preached unto them, ready to depart on the morrow; and continued his speech until midnight (Acts 20:7).

The manner in which it is to be partaken:

Wherefore whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord. But let a man examine himself, and so let him eat of that bread, and drink of that cup. For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord's body. For this cause many are weak and sickly among you, and many sleep (1 Corinthians 11:27-30).

If one is gathered with others for a purpose different than worshiping God; and on a day that is different than the first day of the week; how can one be participating in a memorial in the manner that God desires?