What is Holy Communion?
As Catholics, we believe that Holy Communion truly is the Body, Blood, Soul and Divinity of Our Lord. Every particle of what appears to be bread no matter how small truly is Christ Himself. As such, it needs to be treated with the greatest respect and reverence. Primarily, this means that we should only approach the altar if we are in a state of grace (that is we are not conscious of any mortal sins) and properly disposed to receive (for example, that you are a baptized Catholic, that you have maintained the fast before Mass and that you arrived at Mass on time). If one is not prepared to receive, then one should make an act of spiritual communion in the pews.