Romans 11: 29 - 36
29 For the gifts and the call of God are irrevocable.
30 Just as you were once disobedient to God but now have received mercy because of their disobedience,
31 so they have now been disobedient in order that by the mercy shown to you they also may receive mercy.
32 For God has consigned all men to disobedience, that he may have mercy upon all.
33 O the depth of the riches and wisdom and knowledge of God! How unsearchable are his judgments and how inscrutable his ways!
34 "For who has known the mind of the Lord, or who has been his counselor?"
35 "Or who has given a gift to him that he might be repaid?"
36 For from him and through him and to him are all things. To him be glory for ever. Amen.

EWTN