A whole Sunday is set aside by the Church to celebrate the abundance and constant availability of Jesus' mercy. As we see Thomas put his hand into Jesus' open side, we pray with our Cistercian Father, Blessed William of Saint Thierry:
Those unsearchable riches of your glory, Lord, were hidden in your secret place in heaven until the soldier's spear opened the side of your Son our Lord and Savior on the cross, and from it flowed the mysteries of our redemption. Now we may not only thrust our finger or our hand into his side like Thomas, but through that open door may enter whole, O Jesus, into your heart, the sure seat of your mercy, even into your holy soul that is filled with the fullness of God, full of grace and truth, full of our salvation and our consolation. Open, O Lord, the ark door of your side, that all your own who shall be saved may enter in, before this flood that overwhelms the earth. Open to us your body's side, that those who long to see the secrets of your Son may enter in and receive the sacraments that flow therefrom, even the price of their redemption. Open the door of your heaven, that your redeemed may see the good things of God in the land of the living. Let them see and long, and yearn and run...