Jesus is present in the Eucharist in many ways. The Real Presence is a term used to mean that Jesus (body, blood, soul and divinity) is actually there in the bread and wine of the Eucharist.
Sunday Eucharist has always been at the heart of the Church and the most important expression of Christian life.
The Mass is referred to as the source and summit of the Christian life.
Planning a Mass, some guidelines:
Meaning and Significance of the Eucharist