And as they were eating, Jesus took bread, and blessed it, and broke 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.
However, the term Mass is used primarily by Catholics, and only occasionally by Protestants. Evangelicals almost never use the term. In Protestant churches Sunday gatherings are usually called worship services, and the actual Communion celebration is called Holy Communion, Lord's Supper, and sometimes the Eucharist.