St. Alphonsus Liguori
“The prophet Zacharias says: ‘In that day there shall be a fountain open to the house of David, and to the inhabitants of Jerusalem, for the washing of the sinner’ (ch. xiii. 1). Jesus in the Holy Sacrament is the fountain foretold by the prophet, as open to all; and to which we can go when ever we please, to wash our souls from all the stains of sin which are daily contracted. When any one falls into some fault, what more beautiful remedy is there than to have immediate recourse to the Most Blessed Sacrament?”
Source: St. Alphonsus Liguori, Visits to the Most Holy Sacrament