88 To them in this moment so critical for the Church and for mankind go out Our paternal greeting, Our deepfelt gratitude, Our confident hope. These have truly placed their lives and their work beneath the standard of Christ the King; and they can say with the Psalmist: "I speak my words to the King" ( Psalm xliv. 1). "Thy Kingdom come" is not simply the burning desire of their prayer; it is besides, the guide of their activity.
Source: Summi Pontificatus (Vatican.va)