The Feast of Corpus Christi is a Catholic liturgical solemnity celebrating the real presence of the body and blood of Jesus Christ who is the Son of God in the elements of the Eucharist that is known as transubstantiation. The Eucharist is practiced on Maundy Thursday in a sombre atmosphere leading to Good Friday two months earlier. The liturgy on that day also honors, the institution of the priesthood, Christ's washing of the disciples' feet and the agony in the Garden of Gethsemane. This feast was established to make a feast that only concentrated on the Holy Eucharist explaining the joy of the Eucharist being the body and blood of Jesus Christ.