The Preface for this most holy day tells us that "we are made strong" and that we are "washed clean" when we participate in the Eucharist. I am copying it here for your prayer and reflection:
"It is truly right and just, our duty and our salvation, always and everywhere to give you thanks, Lord, holy Father, almighty and eternal God, through Christ our Lord.
For he is the true and eternal Priest,
who instituted the pattern of an everlasting sacrifice
and was the first to offer himself as the saving Victim,
commanding us to make this offering as his memorial.
As we eat his flesh that was sacrificed for us,
we are washed clean."