At the end of Romans 11, that great tome of Peace, where Paul gives that ultimate explanation of how God makes peace with us (salvation), he gives a kind of doxology. These are his closing remarks of theology before beginning the application in 12.
“Oh, the depth of the riches and wisdom and knowledge of God! How unsearchable are his judgments and how inscrutable his ways! “For who has known the mind of the Lord, or who has been his counselor?” “Or who has given a gift to him that he might be repaid?” For from him and through him and to him are all things. To him be glory forever. Amen.”
(Romans 11:33-36 ESV)