Christ's presence among us in the Eucharist (Holy Communion) has always been a key teaching of the Catholic faith. It has been the constant teaching of the Church from the beginning; the clear belief found in early Christian documents is overwhelming. Through bread and wine Christ becomes present in the Eucharistic celebration; somehow Christ himself is now truly present under this form of food as St. Paul says succinctly. (1 Corinthians 11, 27-30) Usually, First Eucharist is celebrated in the Second grade.