Romans 11:31-35
31Even so have these also now not believed, that through your mercy they also may obtain mercy.
32For God hath concluded them all in unbelief, that he might have mercy upon all.
33O the depth of the riches both of the wisdom and knowledge of God! how unsearchable are his judgments, and his ways past finding out!
34For who hath known the mind of the Lord? or who hath been his counseller?
35Or who hath first given to him, and it shall be recompensed unto him again?
(KJV)