Question:

Can we have the communion on any other day than Sunday? What does the
insciption, INRI on the cross mean?

Answer:

Let me answer the easy question first. INRI is an acronym for a Latin
translation of the inscription Pilate had put on the sign he placed on
Jesus’ cross. Pilate had a sign placed on the cross which translates in
English as Jesus of Nazareth, King of the Jews (John 19:19). The Latin
for this is Iesvs Nazarenvs Rex Ivdaeorvm. The notice was written in
Aramaic, Greek and Latin. Therefore, it is likely that the Latin title,
with the initials INRI was on the cross. Almost certainly, the Roman
Catholic tradition of having the letters INRI on the cross are not
correct, as it is implied that the words were written out.

As for the timing of the communion service, you may be surprised to know
that the New Testament never gives a command for either how often or the
day of the week on which the Lord’s Supper should be celebrated. What
we can say is that the only day we know for sure it was celebrated is
found in Acts 20:7, which says “On the first day of the week (Sunday), we
came together to break bread.” In addition, we know from 1st Corinthians
that it was customary for the church to celebrate the Lord’s Supper at
their weekly meetings. We know from outside sources that the chief
meeting of the church was on Sunday–the eighth day. It is implied that
it was customary for the early church to take the Lord’s Supper on
Sunday. Of course, for the Jews, Sunday started on our Saturday at
sundown and ended on our Sunday at sundown.

In addition, we know from church history that the early church always
celebrated the love feast and the Lord’s supper on Sunday. Having said
all this, it is worth remembering that the New Testament does not
prescribe when the Lord’s Supper should be celebrated. For this reason,
it is probably not a good idea to be legalistic in our view of this. The
communion can be celebrated at other times without disobeying the
scripture. The question of whether it must be taken weekly is
controversial. For myself, the example of the early church is strong
enough that I very strongly prefer to take the communion every week, but I
do not feel it is appropriate to make this a matter of dogma.

John Oakes