“And so all Israel shall be saved: as it is written, ‘There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob: for this is My covenant unto them, when I shall take away their sins.’ As concerning the gospel, enemies for your sakes: but as touching the election, beloved for the fathers’ sakes. For the gifts and calling of God are without repentance.
For as ye in times past have not believed God, yet have now obtained mercy through their unbelief: even so have these also now not believed, that through your mercy they also may obtain mercy. For God hath concluded them all in unbelief, that He might have mercy upon all.
O the depth of the riches both of the wisdom and knowledge of God! How unsearchable are His judgments, and His ways past finding out! ‘For who hath known the mind of the Lord, or who hath been His counsellor? Or who hath first given to Him, and it shall be recompensed unto him again?’ For of Him, and through Him, and to Him, are all things: to whom be glory for ever. Amen.” Romans 11:26-36 (KJB)
References: Psalm 14:7; Isaiah 27:9; Daniel 9:24; Numbers 23:19; Romans 3:9; Jeremiah 23:18; 1 Corinthians 8:6