The three desires that begin the Pater are:
- Hallowed be your name.
- Your kingdom come.
- Your will be done.
God's kingdom is where His throne resides, Heaven itself. One cannot desire that Heaven comes to him, as the subject cannot impose on the King, rather one can only desire to be brought to Heaven. Therefore, it is an expression of hope in God's mercy.
One desires that God's will be realized, but it already is in the whole universe since the beginning. Except in those beings which He created to love Him. As only free beings can love, one desires that the God's will to be loved back is realized. Thus, it is an expression of love for God.
Faith, Hope and Love, the Theological Virtues, the virtues which have as object God Himself. And as such, they are gifts that only God can give: graces.
In conclusion, one starts the Pater desiring that God will give him the fundamental graces that make a creature a child of God, so that one can call Him Father.