To learn more, check out the Catechism’s paragraph numbers 141-145.In order to inspire in the elect a desire for purification and redemption by Christ, three scrutinies are celebrated.
By this means, first of all, the elect are instructed gradually about the mystery of sin, from which the whole world and every person longs to be delivered and thus saved from its present and future consequences.
Second, their spirit is filled with Christ the Redeemer, who is the living water (gospel of the Samaritan woman in the first scrutiny), the light of the world (gospel of the man born blind in the second scrutiny), the resurrection and the life (gospel of Lazarus in the third scrutiny).
From the first to the final scrutiny the elect should progress in their perception of sin and their desire for salvation.