And I will bring them, and they shall dwell in the midst of Jerusalem: and they shall be my people, and I will be their God, in truth and in righteousness.
They shall be my people, and I will be their God, in truth - in good faith, both on their side and mine: God being faithful to His everlasting covenant, and enabling them by His Spirit to be faithful to Him.
In righteousness. On the part of Cod, whose "righteousness" is set forth in he justification of His people through Messiah: and on their part, in the acceptance of the righteousness of God by faith, whereby they justify God, and bring forth the fruits of righteousness to His praise.