Romans 11:31-33

so they too have now become disobedient so that they too may one day receive mercy because of the mercy shown to you. For God has imprisoned all in disobedience so that He may show mercy to all [Jew and Gentile alike]. Oh, the depth of the riches and wisdom and knowledge of God! How unsearchable are His judgments and decisions and how unfathomable and untraceable are His ways!